test-copies: add a `q` branch similar to the `e` but on the new files
This branch will be used to create merge case that mirror ones involving the `e` branch.
Differential Revision: https://phab.mercurial-scm.org/D10056
# Files that just need to be migrated to the formatter.
# Do not add new files here!
mercurial/cext/manifest.c
mercurial/cext/osutil.c
# Vendored code that we should never format:
syntax: glob
contrib/python-zstandard/**.c
contrib/python-zstandard/**.h
hgext/fsmonitor/pywatchman/**.c
mercurial/thirdparty/**.c
mercurial/thirdparty/**.h
mercurial/pythoncapi_compat.h