feat: add import command and batch import functionality

- Implemented the `/import` command to allow users to import files from storage to Telegram.
- Added support for listing files in storage and filtering based on regex patterns.
- Created a batch import task to handle multiple file uploads concurrently.
- Introduced progress tracking for batch imports, providing real-time updates to users.
- Enhanced storage interfaces to support file listing and reading capabilities.
- Updated localization files for the new import command and its usage instructions.
- Added utility functions for file size formatting and speed calculation.
- Refactored Telegram storage handling to support reading from non-seekable streams.

core/tasks/batchimport/taskinfo.go

@@ -0,0 +1,73 @@
+package batchimport
+
+type TaskElementInfo interface {
+	FileName() string
+	FileSize() int64
+	GetSourcePath() string
+	SourceStorageName() string
+}
+
+func (e *TaskElement) FileName() string {
+	return e.FileInfo.Name
+}
+
+func (e *TaskElement) FileSize() int64 {
+	return e.FileInfo.Size
+}
+
+func (e *TaskElement) GetSourcePath() string {
+	return e.SourcePath
+}
+
+func (e *TaskElement) SourceStorageName() string {
+	return e.SourceStorage.Name()
+}
+
+type TaskInfo interface {
+	TaskID() string
+	TotalSize() int64
+	Uploaded() int64
+	Count() int
+	Processing() []TaskElementInfo
+	FailedFiles() []string
+}
+
+func (t *Task) TotalSize() int64 {
+	return t.totalSize
+}
+
+func (t *Task) Uploaded() int64 {
+	return t.uploaded.Load()
+}
+
+func (t *Task) Count() int {
+	return len(t.elems)
+}
+
+func (t *Task) Processing() []TaskElementInfo {
+	t.processingMu.RLock()
+	defer t.processingMu.RUnlock()
+
+	result := make([]TaskElementInfo, 0, len(t.processing))
+	for _, elem := range t.processing {
+		result = append(result, elem)
+	}
+	return result
+}
+
+func (t *Task) FailedFiles() []string {
+	t.processingMu.RLock()
+	defer t.processingMu.RUnlock()
+
+	result := make([]string, 0, len(t.failed))
+	for id := range t.failed {
+		// Find the element by ID
+		for _, elem := range t.elems {
+			if elem.ID == id {
+				result = append(result, elem.FileInfo.Name)
+				break
+			}
+		}
+	}
+	return result
+}