refactor: rename for Laravel conventions and better DX

- Rename IsCommenter trait to CanComment, Commenter interface to Commentator
- Move models to Models/ namespace (Comment, Reaction, Attachment, Subscription)
- Rename user_type/user_id polymorphic columns to commenter_type/commenter_id
- Rename Config class to CommentsConfig, update config key tables->table_names
- Rename getCommentName() to getCommentDisplayName() on commentator models
- Add column_names config section for commenter morph customization
- Add table_names config with all 5 tables individually configurable
- Expand translation file with structured i18n groups
- Update all Blade views, Livewire components, events, listeners, and tests

database/migrations/create_comment_mentions_table.php.stub

@@ -8,15 +8,15 @@ return new class extends Migration
 {
     public function up(): void
     {
-        Schema::create('comment_mentions', function (Blueprint $table) {
+        Schema::create(config('comments.table_names.mentions', 'comment_mentions'), function (Blueprint $table) {
             $table->id();
             $table->foreignId('comment_id')
-                ->constrained(config('comments.tables.comments', 'comments'))
+                ->constrained(config('comments.table_names.comments', 'comments'))
                 ->cascadeOnDelete();
-            $table->morphs('user');
+            $table->morphs('commenter');
             $table->timestamps();
 
-            $table->unique(['comment_id', 'user_id', 'user_type']);
+            $table->unique(['comment_id', 'commenter_id', 'commenter_type']);
         });
     }
 };