share: introduce config option to store requires in .hg/store
This introduces a config option which enabled stores the requirements on a
repository in store instead.
When enabled, `.hg/requires` will contain the `share-safe` requirement which
marks that the requirements are present in the store.
This is done so that repository requirements can be shared with shares made
using `hg share` command.
After this patch, `hg share` checks whether the source repository has
share-safe requirement, if yes, it does not copy the requirements.
Test for the new functionality is added and a test case in exitsing share tests
is also added.
Differential Revision: https://phab.mercurial-scm.org/D8633
[tool.black]
line-length = 80
exclude = '''
build/
| wheelhouse/
| dist/
| packages/
| \.hg/
| \.mypy_cache/
| \.venv/
| mercurial/thirdparty/
'''
skip-string-normalization = true
quiet = true