feat(controllers): optimize caching and view data passing

- Refactored the ChampionController, ChampionSkinController, HomeController, SaleController, SummonerEmoteController, and SummonerIconController to use arrow functions for cache callbacks.
- Updated the view data passing in the ChampionController, ChampionSkinController, HomeController, PostsController, SaleController, SummonerEmoteController, and SummonerIconController to use associative arrays instead of compact().
- Removed unused imports from web.php.

app/Http/Controllers/PostsController.php

@@ -20,6 +20,6 @@ class PostsController extends Controller
 
     public function show(Sheet $post)
     {
-        return view('posts.show', compact('post'));
+        return view('posts.show', ['post' => $post]);
     }
 }