### What problem does this PR solve?
feat: change all file names to lowercase #1574
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Let json files support naive parsing methods #1245
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
#607
fix: omit long file names
fix: change the parsing method from tag to select
fix: replace icon for new chat
fix: change the OK button text of the Chat Bot API modal to close
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
* feat: select the corresponding parsing method according to the file type
* feat: after the document is successfully uploaded, use the ChunkMethodModal to select the parsing method.
* feat: add pdf types to ParserListMap
* feat: remove ChunkMethodModal from knowledge-file