add test for jpg support https://github.com/electronstudio/raylib-python-cffi/issues/89

tests/test_jpg_support.py

@@ -0,0 +1,31 @@
+from raylib import *
+
+screenWidth = 800
+screenHeight = 450
+
+InitWindow(screenWidth, screenHeight, b"raylib [textures] example - image loading")
+
+
+
+image = LoadImage(b"examples/textures/resources/raylib_logo.jpg")
+texture = LoadTextureFromImage(image)
+
+UnloadImage(image)
+
+while not WindowShouldClose():
+
+    BeginDrawing()
+
+    ClearBackground(RAYWHITE)
+
+    DrawTexture(texture, int(screenWidth/2 - texture.width/2), int(screenHeight/2 - texture.height/2), WHITE)
+
+    DrawText(b"this IS a texture loaded from an image!", 300, 370, 10, GRAY)
+
+    EndDrawing()
+
+
+
+
+UnloadTexture(texture)     
+CloseWindow()