Anki add-on: Addons Archived Backup

Update 20240405: 1: Fix some bugs to support year's verson, only with pyqt6. Update 20210607: 1: Add ContextMenu on addonlist window, when you selected one or more item and right click on it, will show some menu for action. 2: Right Click Menu include Backup function and also include increase selected addon's meta content [mod], this mod is the addon's update time, i think if change this mod time would be delayed the addon's update, maybe or not, i just try it for my own issue. This add-on can backup addons file archievd to id.ankiaddon. The backup file's name include id name time and another informations. The backup files also can installed from menu: Tools---Add-ons--Install from file... 1: The Addon's entry can from menu: Tools---Add-ons---Backup button which added under the 'Delete" button. 2: Befor Open BackupDialog, you can selected addons in the Add-ons Dialog to backup, or In the BackupDialog, you can choose all or Enabled or Disabled addons. 3: When you backup addons can choose the addons'file download from the ankiweb.net or local disk; when write to disk, this addon will check the addon's manifest.json which is needed by the Anki's install tools, if lack of the manifest.json will create it or other problems.