add placeholder for placing items

src/main.cpp

@@ -34,6 +34,7 @@ int main() {
 
         entityTextures.LoadImage("./src/assets/playersprite.png");
         tileTextures.LoadImage("./src/assets/BasicTile.png");
+        raylib::Texture placeholder("./src/assets/Dirt_01.png");
 
         Camera2D camera = { 0 };
         camera.offset = { screenWidth/2.0f, screenHeight/2.0f };
@@ -77,6 +78,8 @@ int main() {
           }
         }
 
+        if (IsMouseButtonDown(MOUSE_BUTTON_LEFT)) placeholder.Draw(GetMousePosition().x, GetMousePosition().y, WHITE);
+
         player.Draw();
 
         EndMode2D();