### What problem does this PR solve?

fix: add spin to parsing status icon of dataset table
#648 

### Type of change

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

### What problem does this PR solve?

document list needs to be batch operated


Issue link: #301

### Type of change

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

* feat: Remove duplicate \n from record.progress_msg

* feat: add DocumentPreviewer for chunk of chat reference

* feat: remove react-pdf

* feat: add Skeleton to Preview of document

* feat: set width of chunk text to 100%

* feat: add a run button to the document

* feat: add knowledge configuration page

* feat: remove KnowledgeSearching

* feat: modify routing to nested mode

* feat: rename document