* 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
* fix: by obtaining the width and height of the pdf and passing it to boundingRect, the problem of inaccurate positioning of file highlighting is fixed
* feat: remove actualPositions from buildChunkHighlights