feat: Add functionality to retrieve champion images from the database

- Added a new function `getChampionImage` to fetch champion images based on ID and type.
- Created a new model `ChampionImage` to store champion image details in the database.
- Implemented seeding of champion images using `ChampionImageSeeder`.
- Updated usage of champion images in existing methods.

app/Helpers/HelperFunctions.php

@@ -2,6 +2,7 @@
 
 use Intervention\Image\Drivers\Gd\Driver;
 use Intervention\Image\ImageManager;
+use App\Models\ChampionImage;
 
 function getRoleIcon($roleName): string
 {
@@ -64,3 +65,21 @@ function getRoleIconSvg($roleName): string
 
     return $roleIcons[$roleName];
 }
+
+/**
+ * Get the champion image
+ *
+ * @param string $full_id
+ * @param enum $type splash, uncentered_splash, loading, tile, icon, ability, video
+ * @return string
+ */
+function getChampionImage($full_id, $type): string
+{
+    $championImage = ChampionImage::where('full_id', $full_id)->where('type', $type)->first();
+
+    if (!$championImage) {
+        return '';
+    }
+
+    return $championImage->url;
+}