refactor pyray into separate module

tests/test_pyray_no_prefix.py

@@ -0,0 +1,45 @@
+"""
+This shows how to use the Pyray wrapper around the static binding.
+"""
+
+from pyray import *
+
+init_window(800, 450, "Raylib texture test")
+set_target_fps(60)
+
+image = gen_image_color(800, 400, (0,0,0,255) )
+texture = load_texture_from_image(image)
+update_texture(texture, image.data)
+
+camera = Camera3D([18.0, 16.0, 18.0], [0.0, 0.0, 0.0], [0.0, 1.0, 0.0], 45.0, 0)
+image = load_image("examples/models/resources/heightmap.png")
+texture = load_texture_from_image(image)
+mesh = gen_mesh_heightmap(image, (16, 8, 16))
+model = load_model_from_mesh(mesh)
+model.materials.maps[MATERIAL_MAP_DIFFUSE].texture = texture
+
+unload_image(image)
+set_camera_mode(camera, CAMERA_ORBITAL)
+
+pos = get_mouse_position()
+ray = get_mouse_ray(pos, camera)
+rayhit = get_collision_ray_ground(ray, 0)
+print(str(rayhit.position.x))
+
+while not window_should_close():
+    update_camera(camera)
+    begin_drawing()
+    clear_background(RAYWHITE)
+    begin_mode_3d(camera)
+    draw_model(model, (-8.0, 0.0, -8.0), 1.0, RED)
+    draw_grid(20, 1.0)
+    end_mode_3d()
+    draw_text("This mesh should be textured", 190, 200, 20, VIOLET)
+    end_drawing()
+
+    pos = get_mouse_position()
+    ray = get_mouse_ray(pos, camera)
+    rayhit = get_collision_ray_ground(ray, 0)
+    #print(str(rayhit.position.x))
+
+close_window()