update examples with difficulty stars (#4694)

* update examples with difficulty stars

* manual fix script issues

* manual fix script issues

examples/shaders/shaders_basic_lighting.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - basic lighting
 *
+*   Example complexity rating: [★★★★] 4/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_custom_uniform.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Postprocessing with custom uniform variable
 *
+*   Example complexity rating: [★★☆☆] 2/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_deferred_render.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - deferred rendering
 *
+*   Example complexity rating: [★★★★] 4/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or OpenGL ES 3.0
 *
 *   Example originally created with raylib 4.5, last time updated with raylib 4.5

examples/shaders/shaders_eratosthenes.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Sieve of Eratosthenes
 *
+*   Example complexity rating: [★★★☆] 3/4
+*
 *   NOTE: Sieve of Eratosthenes, the earliest known (ancient Greek) prime number sieve.
 *
 *       "Sift the twos and sift the threes,

examples/shaders/shaders_fog.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - fog
 *
+*   Example complexity rating: [★★★☆] 3/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_hot_reloading.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Hot reloading
 *
+*   Example complexity rating: [★★★☆] 3/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 for shaders support and only #version 330
 *         is currently supported. OpenGL ES 2.0 platforms are not supported at the moment.
 *

examples/shaders/shaders_hybrid_render.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Hybrid Rendering
 *
+*   Example complexity rating: [★★★★] 4/4
+*
 *   Example originally created with raylib 4.2, last time updated with raylib 4.2
 *
 *   Example contributed by Buğra Alptekin Sarı (@BugraAlptekinSari) and reviewed by Ramon Santamaria (@raysan5)

examples/shaders/shaders_julia_set.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Julia sets
 *
+*   Example complexity rating: [★★★☆] 3/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_lightmap.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - lightmap
 *
+*   Example complexity rating: [★★★☆] 3/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_mesh_instancing.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Mesh instancing
 *
+*   Example complexity rating: [★★★★] 4/4
+*
 *   Example originally created with raylib 3.7, last time updated with raylib 4.2
 *
 *   Example contributed by @seanpringle and reviewed by Max (@moliad) and Ramon Santamaria (@raysan5)

examples/shaders/shaders_model_shader.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Model shader
 *
+*   Example complexity rating: [★★☆☆] 2/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_multi_sample2d.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Multiple sample2D with default batch system
 *
+*   Example complexity rating: [★★☆☆] 2/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_palette_switch.c

@@ -1,6 +1,8 @@
 /*******************************************************************************************
 *
 *   raylib [shaders] example - Color palette switch
+*
+*   Example complexity rating: [★★★☆] 3/4
 *
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.

examples/shaders/shaders_postprocessing.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Apply a postprocessing shader to a scene
 *
+*   Example complexity rating: [★★★☆] 3/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_raymarching.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Raymarching shapes generation
 *
+*   Example complexity rating: [★★★★] 4/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 for shaders support and only #version 330
 *         is currently supported. OpenGL ES 2.0 platforms are not supported at the moment.
 *

examples/shaders/shaders_shapes_textures.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Apply a shader to some shape or texture
 *
+*   Example complexity rating: [★★☆☆] 2/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_simple_mask.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Simple shader mask
 *
+*   Example complexity rating: [★★☆☆] 2/4
+*
 *   Example originally created with raylib 2.5, last time updated with raylib 3.7
 *
 *   Example contributed by Chris Camacho (@chriscamacho) and reviewed by Ramon Santamaria (@raysan5)

examples/shaders/shaders_spotlight.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Simple shader mask
 *
+*   Example complexity rating: [★★☆☆] 2/4
+*
 *   Example originally created with raylib 2.5, last time updated with raylib 3.7
 *
 *   Example contributed by Chris Camacho (@chriscamacho) and reviewed by Ramon Santamaria (@raysan5)

examples/shaders/shaders_texture_drawing.c

@@ -1,6 +1,8 @@
 /*******************************************************************************************
 *
-*   raylib [textures] example - Texture drawing
+*   raylib [shaders] example - Texture drawing
+*
+*   Example complexity rating: [★★☆☆] 2/4
 *
 *   NOTE: This example illustrates how to draw into a blank texture using a shader
 *

examples/shaders/shaders_texture_outline.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Apply an shdrOutline to a texture
 *
+*   Example complexity rating: [★★★☆] 3/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_texture_tiling.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - texture tiling
 *
+*   Example complexity rating: [★★☆☆] 2/4
+*
 *   Example demonstrates how to tile a texture on a 3D model using raylib.
 *
 *   Example contributed by Luis Almeida (@luis605) and reviewed by Ramon Santamaria (@raysan5)

examples/shaders/shaders_texture_waves.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Texture Waves
 *
+*   Example complexity rating: [★★☆☆] 2/4
+*
 *   NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support,
 *         OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version.
 *

examples/shaders/shaders_write_depth.c

@@ -2,6 +2,8 @@
 *
 *   raylib [shaders] example - Depth buffer writing
 *
+*   Example complexity rating: [★★☆☆] 2/4
+*
 *   Example originally created with raylib 4.2, last time updated with raylib 4.2
 *
 *   Example contributed by Buğra Alptekin Sarı (@BugraAlptekinSari) and reviewed by Ramon Santamaria (@raysan5)