refactor: remove Gorse integration and implement HotRank feature

- Removed Gorse-related configurations, handlers, and dependencies from the codebase.
- Introduced HotRank feature with configuration options for ranking posts based on recent activity.
- Updated application structure to support HotRank processing, including new caching mechanisms and database interactions.
- Cleaned up related DTOs and repository methods to reflect the removal of Gorse and the addition of HotRank functionality.

internal/service/admin_post_service.go

@@ -332,7 +332,6 @@ func convertPostToAdminDetailResponse(post *model.Post) *dto.AdminPostDetailResp
 		FavoritesCount:  post.FavoritesCount,
 		SharesCount:     post.SharesCount,
 		ViewsCount:      post.ViewsCount,
-		HotScore:        post.HotScore,
 		IsPinned:        post.IsPinned,
 		IsFeatured:      post.IsFeatured,
 		IsLocked:        post.IsLocked,