Git Commands as std::process::Command functions

[travispotterBH]

• switch branch
• create new branch
• delete branch from local
• push / pop from stash based on stash name
• basename
• rev-parse --show-toplevel (location of repo)

[travispotterBH]

There are a few rust implementations of git, for example:

• gitoxide
• git2

However, I think there is more educational value in developing our own git wrapper for just the parts we need. If this expands into a much larger project, I would be okay with making one of those projects a dependency for this tool, of course only if their licenses allow for it.