GitFilesystemHook: handle apostrophe in filename

[Wenzel]

When commiting a file with an apostrophe ’ as part of the filename, git ls-files will return it as an escaped character:

This breaks our GitFilesystemHook when a guest filepath already exists on the git, and should be removed from the self.to_remove_tree dict:

oswatcher/hooks/filesystem.py

Line 372 in de3d473

self.logger.warning("Couldn't remove %s from old filesystem removal tree", relpath)

For the moment we simply ignore these files, by detecting when a filepath returns by git ls-files startswith an apostrophe:

oswatcher/hooks/filesystem.py

Line 329 in de3d473

for p in [Path(p) for p in self.repo.git.ls_files().split('\n') if not p.startswith("\"")]: