Add ClientHookCommands to run Git client hooks and default support for `prepare-commit-msg` hook#5099

Guilherme1Rocha wants to merge 2 commits intojesseduffield:masterjesseduffield/lazygit:masterfrom

Guilherme1Rocha:feature/prepare-commit-msg-git-hook-supportGuilherme1Rocha/lazygit:feature/prepare-commit-msg-git-hook-supportCopy head branch name to clipboard