[#2] work on tv series processing

database/migrations/2025_01_04_003059_create_seasons_table.php

@@ -15,7 +15,7 @@ return new class extends Migration
             $table->id();
             $table->date('air_date')->nullable();
             $table->integer('episode_count')->nullable();
-            $table->bigInteger('tmdb_id');
+            $table->bigInteger('tmdb_id')->nullable();
             $table->string('name')->nullable();
             $table->string('slug')->nullable();
             $table->text('overview')->nullable();