refactor: refactor task logic for better scalability (#76)

* refactor: a big refactor. wip

* refactor: port handle file

* refactor: place all handlers

* fix: task info nil pointer

* feat: enhance task progress tracking and context management

* feat: cancel task

* feat: stream mode

* feat: silent mode

* feat: dir cmd

* refactor: remove unused old file

* feat: rule cmd

* feat: handle silent mode

* feat: batch task

* fix: batch task progress and temp file cleanup

* refactor: update file creation and cleanup methods for better resource management

* feat: add save command with silent mode handling

* feat: message link

* feat: update message prompts to include file count in storage selection

* feat: slient save links

* refactor: reduce dup code

* feat: rule type

* feat: chose dir

* feat: refactor file handling and storage rules, improve error handling and logging

* feat: rule mode

* feat: telegraph pics

* fix: tphpics nil pointer and inaccurate dirpath

* feat: silent save telegraph

* feat: add suffix to avoid file overwrite

* feat: new storage telegram

* chore: tidy go mod

common/utils/fsutil/fs.go

@@ -0,0 +1,57 @@
+package fsutil
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/gabriel-vasile/mimetype"
+)
+
+// 删除文件夹内的所有文件和子目录, 但不删除文件夹本身
+func RemoveAllInDir(dirPath string) error {
+	entries, err := os.ReadDir(dirPath)
+	if err != nil {
+		return err
+	}
+	for _, entry := range entries {
+		entryPath := filepath.Join(dirPath, entry.Name())
+		if err := os.RemoveAll(entryPath); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func DetectFileExt(fp string) string {
+	mt, err := mimetype.DetectFile(fp)
+	if err != nil {
+		return ""
+	}
+	return mt.Extension()
+}
+
+type File struct {
+	*os.File
+}
+
+func (f *File) Remove() error {
+	return os.Remove(f.Name())
+}
+
+func (f *File) CloseAndRemove() error {
+	if err := f.Close(); err != nil {
+		return err
+	}
+	return f.Remove()
+}
+
+func CreateFile(fp string) (*File, error) {
+	if err := os.MkdirAll(filepath.Dir(fp), os.ModePerm); err != nil {
+		return nil, err
+	}
+	file, err := os.Create(fp)
+	if err != nil {
+		return nil, err
+	}
+	return &File{File: file}, nil
+}