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

client/bot/handlers/utils/msgelem/save.go

@@ -0,0 +1,15 @@
+package msgelem
+
+const (
+	SaveHelpText = `
+	使用方法:
+
+	1. 使用该命令回复要保存的文件, 可选文件名参数.
+	示例:
+	/save custom_file_name.mp4
+
+	2. 设置默认存储后, 发送 /save <频道ID/用户名> <消息ID范围> 来批量保存文件. 遵从存储规则, 若未匹配到任何规则则使用默认存储.
+	示例:
+	/save @moreacg 114-514
+	`
+)