feat: initial release of relaticle/comments

Filament comments package with:
- Polymorphic commenting on any Eloquent model
- Threaded replies with configurable depth
- @mentions with autocomplete and user search
- Emoji reactions with toggle and who-reacted tooltips
- File attachments via Livewire uploads
- Reply and mention notifications via Filament notification system
- Thread subscriptions for notification control
- Real-time broadcasting (opt-in Echo) with polling fallback
- Dark mode support
- CommentsAction, CommentsTableAction, CommentsEntry for Filament integration
- 204 tests, 421 assertions

tests/Feature/CommentsEntryTest.php

@@ -0,0 +1,21 @@
+<?php
+
+use Relaticle\Comments\Filament\Infolists\Components\CommentsEntry;
+
+it('can be instantiated via make', function () {
+    $entry = CommentsEntry::make('comments');
+
+    expect($entry)->toBeInstanceOf(CommentsEntry::class);
+});
+
+it('has the correct view path', function () {
+    $entry = CommentsEntry::make('comments');
+
+    expect($entry->getView())->toBe('comments::filament.infolists.components.comments-entry');
+});
+
+it('defaults to full column span', function () {
+    $entry = CommentsEntry::make('comments');
+
+    expect($entry->getColumnSpan('default'))->toBe('full');
+});