Catch exception if git is not installed (#10486)

* Catch exception if git is not installed

* fix formatting

* change type from IO to m

* add maybeReadProcessWithExitCode

* use maybeReadProcessWithExitCode

* disambiguate P.catch

* add TypeApplications pragma

* add missing arguments

* Add changelog entry

* Add test for `cabal init` when `git` is not installed

* Remove withSourceCopyDir from test

* Remove withSourceCopyDir from test

* Remove configure and build from test

* Remove assert

* Skip test on windows

---------

Co-authored-by: noiioiu <noiioiu@cocaine.ninja>
(cherry picked from commit e7bc62be)