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delafthi changed the title feat(walk): add method to walk the filesystem with jujutsu feat: add jujutsu walker

- added jujutsu module similar to the git module, which provides the `IsInsideWorktree` function
- added jujutsu walker, with the following differences to the git walker
  - the list command does not update the index. thus, new files are not listed, the user has to add them to the index first by running a `jj` command
- added jujutsu walker test
- added jujutsu walker root test
- adapted config and docs

Removed unnecessary unquoting logic for lines (file paths) starting with a quote.