### What problem does this PR solve?

Delete files from a knowledge base.

#717 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?
#717 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?


### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

#717 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

#709

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

#709 
### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

api_app.py
/document/upload 
add two non mandatory parameters
parser_id:
[naive,qaresume,manual,table,paper,book,laws,presentation,picture,one]
run: 1

### Type of change
- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

### Type of change

- [x] Refactoring

### What problem does this PR solve?
Add upload file by knowledge base name API.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)
- [x] Documentation Update

---------

Co-authored-by: chrysanthemum-boy <fannc@qq.com>

### What problem does this PR solve?

#384

### Type of change

- [x] Performance Improvement

### What problem does this PR solve?

#381 
### Type of change

- [x] Refactoring

### What problem does this PR solve?


Issue link:#345

### Type of change

- [x] New Feature (non-breaking change which adds functionality)