feat: seeder that updates the theme slug according to our new standard (

#614)

database/seeders/Wiki/Anime/ThemeSlugSeeder.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Database\Seeders\Wiki\Anime;
+
+use App\Models\Wiki\Anime\AnimeTheme;
+use Illuminate\Database\Seeder;
+use Illuminate\Support\Facades\DB;
+
+class ThemeSlugSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {   
+        AnimeTheme::query()->where(AnimeTheme::ATTRIBUTE_SLUG, 'OP')->update([
+            AnimeTheme::ATTRIBUTE_SLUG => 'OP1'
+        ]);
+
+        AnimeTheme::query()->where(AnimeTheme::ATTRIBUTE_SLUG, 'ED')->update([
+            AnimeTheme::ATTRIBUTE_SLUG => 'ED1'
+        ]);
+
+        AnimeTheme::query()->where(AnimeTheme::ATTRIBUTE_SLUG, 'LIKE', 'OP-%')->update([
+            AnimeTheme::ATTRIBUTE_SLUG => DB::raw('CONCAT("OP1-", SUBSTRING(slug, 4))')
+        ]);
+
+        AnimeTheme::query()->where(AnimeTheme::ATTRIBUTE_SLUG, 'LIKE', 'ED-%')->update([
+            AnimeTheme::ATTRIBUTE_SLUG => DB::raw('CONCAT("ED1-", SUBSTRING(slug, 4))')
+        ]);
+    }
+}