refactor: prefix tmdb metadata models with tmdb

Will help for when there exists other metadata sources available (such as already done for igdb)

Step 4 in cleaner meta fetching code.

app/Models/TmdbCollection.php

@@ -0,0 +1,59 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * NOTICE OF LICENSE.
+ *
+ * UNIT3D Community Edition is open-sourced software licensed under the GNU Affero General Public License v3.0
+ * The details is bundled with this project in the file LICENSE.txt.
+ *
+ * @project    UNIT3D Community Edition
+ *
+ * @author     HDVinnie <hdinnovations@protonmail.com>
+ * @license    https://www.gnu.org/licenses/agpl-3.0.en.html/ GNU Affero General Public License v3.0
+ */
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * App\Models\TmdbCollection.
+ *
+ * @property int         $id
+ * @property string      $name
+ * @property string      $name_sort
+ * @property string|null $parts
+ * @property string|null $overview
+ * @property string|null $poster
+ * @property string|null $backdrop
+ * @property string|null $created_at
+ * @property string|null $updated_at
+ */
+class TmdbCollection extends Model
+{
+    /** @use HasFactory<\Database\Factories\TmdbCollectionFactory> */
+    use HasFactory;
+
+    protected $guarded = [];
+
+    public $timestamps = false;
+
+    /**
+     * @return \Illuminate\Database\Eloquent\Relations\MorphMany<Comment, $this>
+     */
+    public function comments(): \Illuminate\Database\Eloquent\Relations\MorphMany
+    {
+        return $this->morphMany(Comment::class, 'commentable');
+    }
+
+    /**
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany<TmdbMovie, $this>
+     */
+    public function movie(): \Illuminate\Database\Eloquent\Relations\BelongsToMany
+    {
+        return $this->belongsToMany(TmdbMovie::class);
+    }
+}