### What problem does this PR solve? As description. ### Type of change - [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve? Files /file API to RESTFul style. ### Type of change - [x] Documentation Update - [x] Refactoring --------- Co-authored-by: writinwaters <cai.keith@gmail.com> Co-authored-by: Liu An <asiro@qq.com>