Add an opt-in star rating for comments

[ItsMalikJones]

Closes #29

Summary

Lets commenters attach a star rating to a comment, review-style. The feature is disabled by default and is fully opt-in — existing installs see no behavioral change until they enable it.

Ratings can be turned on globally via config, or per-component on CommentsEntry, CommentsAction, and CommentsTableAction, with a configurable maximum.

What's included

• Storage — an additive migration adds a nullable rating column (unsignedTinyInteger) to the comments table. The Comment model adds rating to $fillable and casts it to an integer. getCacheKey() now incorporates the rating so polling correctly detects rating changes.
• Configuration — a new commentions.ratings config block (enabled, max), backed by COMMENTIONS_RATINGS_ENABLED / COMMENTIONS_RATINGS_MAX env vars and exposed through Config::ratingsAreEnabled() / Config::getMaxRating().
• Per-component overrides — a HasRatings concern adds enableRatings(bool|Closure), disableRatings(), and maxRating(int|Closure). Component settings override the global config and thread through to the Livewire layer.
• UI — when enabled, the comment editor shows an interactive star input (create and edit); each rated comment renders its score as filled/empty stars. The rating is validated (nullable|integer|min:1|max:N) on both create and edit, and persisted via SaveComment.
• Accessibility & i18n — the input uses role="group" with per-star aria-pressed/aria-label, the display uses role="img" with an aria-label, and star labels use trans_choice pluralization. New translation keys added to resources/lang/en/comments.php.

Usage

Enable globally in config/commentions.php:

'ratings' => [
    'enabled' => env('COMMENTIONS_RATINGS_ENABLED', false),
    'max'     => (int) env('COMMENTIONS_RATINGS_MAX', 5),
],

Or per component (overrides the global config):

CommentsEntry::make('comments')
    ->enableRatings()
    ->maxRating(10);

After upgrading, publish and run the new migration:

php artisan vendor:publish --tag="commentions-migrations"
php artisan migrate

Testing

• Added tests/Livewire/CommentRatingTest.php (15 tests, 36 assertions) covering: attaching a rating, ignoring it when disabled, min/max bounds rejection, per-component enable/disable and maxRating overrides (including disabling when globally enabled), star rendering against per-component max, and editing a rating round-trip.
• Registered the new migration stub in the test harness.