Return error if the .git exists but is not a directory. This provides a
slightly better failure message for git repo with submodules in case
the '.git' is a file which provides the reference to the parent's .git
folder with the submodule inside.
If your git.skipHookPrefix is set to, say, WIP, in your config, then
hitting 'w' in the files panel will bring up the commit message panel
with 'WIP' pre-filled, so you just need to hit enter to confirm
(or add some more to the message) in order to commit your changes
with the --no-verify flag, meaning the pre-commit hook will be skipped
allows a user to specify a commit message prefix that will tell lazygit to skip
the pre-commit hook. This defaults to WIP. Setting it to the empty string will
disable the feature.
So if my message goes 'WIP: do the thing' then the pre-commit hook will not run
This fixes up some git and oscommand tests, and pulls some tests into commit_list_builder_test.go
I've also made the NewDummyBlah functions public so that I didn't need to duplicate them across packages
I've also given OSCommand a SetCommand() method for setting the command on the struct
I've also created a file utils.go in the test package for creating convient 'CommandSwapper's, which
basically enable you to assert a sequence of commands on the command line, and swap each one out for
a different one to actually be executed
