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

composer.json

@@ -0,0 +1,50 @@
+{
+    "name": "relaticle/comments",
+    "description": "A full-featured commenting system for Filament panels",
+    "type": "library",
+    "license": "MIT",
+    "require": {
+        "php": "^8.2",
+        "filament/filament": "^4.0|^5.0",
+        "filament/notifications": "^4.0|^5.0",
+        "filament/support": "^4.0|^5.0",
+        "illuminate/database": "^12.0|^13.0",
+        "illuminate/support": "^12.0|^13.0",
+        "livewire/livewire": "^3.5|^4.0",
+        "spatie/laravel-package-tools": "^1.93"
+    },
+    "require-dev": {
+        "laravel/pint": "^1.0",
+        "larastan/larastan": "^3.0",
+        "orchestra/testbench": "^10.0|^11.0",
+        "pestphp/pest": "^3.0|^4.0",
+        "pestphp/pest-plugin-laravel": "^3.0|^4.0",
+        "pestphp/pest-plugin-livewire": "^3.0|^4.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "Relaticle\\Comments\\": "src/",
+            "Relaticle\\Comments\\Database\\Factories\\": "database/factories/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Relaticle\\Comments\\Tests\\": "tests/"
+        }
+    },
+    "extra": {
+        "laravel": {
+            "providers": [
+                "Relaticle\\Comments\\CommentsServiceProvider"
+            ]
+        }
+    },
+    "config": {
+        "sort-packages": true,
+        "allow-plugins": {
+            "pestphp/pest-plugin": true
+        }
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
+}