### What problem does this PR solve?
#345
feat: translate FileManager
feat: batch delete files from the file table in the knowledge base
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: add file icon to table of FileManager #345
fix: modify datasetDescription
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
feat: upload file in FileManager #345
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
