Bookmark Manager (BM)

Use the extended function of VSCODE to develop and manage users' bookmarks, allowing users to visually and conveniently manage bookmarks.

Working

Support custom grouping
- Support custom grouping
  - Delete group
  - Create new group, edit group
  - Clear bookmarks within a group
  - Activate default group status
- Support custom group drag and drop
  - Group drag and drop sorting
  - Drag and drop bookmarks within a group to adjust bookmark groups

Done