### What problem does this PR solve?

The `ocr.res` file is already included in the model directory
`rag/res/deepdoc`, but it doesn't seem to be utilized here.

### Type of change

- [x] Documentation Update

### What problem does this PR solve?

Add Chinese explanation for deepdoc

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [*] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

* init README of deepdoc, add picture processer.

* add resume parsing