feat: add direct links download functionality

- Implemented a new task type for handling direct links downloads.
- Added command handler for downloading multiple links via /dl command.
- Introduced progress tracking for direct link downloads.
- Enhanced filename parsing to support various encoding scenarios.
- Updated enums to include direct links as a task type.
- Refactored existing task structures to accommodate new functionality.
- Improved error handling and logging throughout the download process.

core/tasks/parsed/task.go

@@ -19,9 +19,9 @@ type Task struct {
 	Stor       storage.Storage
 	StorPath   string
 	item       *parser.Item
-	httpClient *http.Client
-	progress   ProgressTracker
-	stream     bool
+	httpClient *http.Client // [TODO] btorrent support?
+	progress ProgressTracker
+	stream   bool
 
 	totalResources  int64
 	downloaded      atomic.Int64 // downloaded resources count