Add option to ignore nested git repositories #2751
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This implements the suggestion made in #23 to provide an option to ignore nested git repositories.
A nested git repository is identified by the presence of a .git file or directory. It's a directory in the regular case, but it's a file for git worktrees and git submodules.
This option is disabled by default.
I'm open to suggestions for better names for things. In particular I'm not sure about the name
ignore_nested_git_repo
used inIgnoreOptions
andIgnoreBuilder
because the concept of 'nesting' is outside of that layer; it has no knowledge of the level of aDirEntry
and relies on the calling code to make sure that the level 0 directory is never ignored.