[examples] Add models_geometry_textures_cube (#5221)

* ADDED: example:  models_geometry_textures_cube

* FIXED: example: models_geometry_textures_cube - removed leftover TODO and aligned title with header

examples/models/models_geometry_textures_cube.c

@@ -0,0 +1,88 @@
+/*******************************************************************************************
+*
+*   raylib [models] example - geometry textures cube
+*
+*   Example complexity rating: [★☆☆☆] 1/4
+*
+*   Example originally created with raylib 5.6-dev, last time updated with raylib 5.6-dev
+*   
+*   Example contributed by Jopestpe (@jopestpe)
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2025-2025 Jopestpe (@jopestpe)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - geometry textures cube");
+
+    // Define the camera to look into our 3d world
+    Camera camera = { 0 };
+    camera.position = (Vector3){ 0.0f, 0.0f, 4.0f };
+    camera.target = (Vector3){ 0.0f, 0.0f, 0.0f };
+    camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };
+    camera.fovy = 45.0f;
+    camera.projection = CAMERA_PERSPECTIVE;
+
+    // Load image to create texture for the cube
+    Model model = LoadModelFromMesh(GenMeshCube(1.0f, 1.0f, 1.0f));
+    Image img = LoadImage("resources/cubicmap_atlas.png");
+    Image crop = ImageFromImage(img, (Rectangle){0, img.height/2, img.width/2, img.height/2});
+    Texture2D texture = LoadTextureFromImage(crop);
+    UnloadImage(img);
+    UnloadImage(crop);
+
+    model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture;
+
+    float rotation = 0.0f;
+    
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        rotation += 1.0f;
+        
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            BeginMode3D(camera);
+            
+                DrawModelEx(model, (Vector3){0,0,0}, (Vector3){0.5f,1,0}, rotation, (Vector3){1,1,1}, WHITE);
+                
+            EndMode3D();
+
+            DrawFPS(10, 10);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(texture); // Unload texture
+    UnloadModel(model);     // Unload model
+    CloseWindow();          // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}