Extract tmuxinator from tmux.nix into its own programs/tmuxinator.nix
module. The new module adds:
- programs.tmux.tmuxinator.package for customising the tmuxinator package
- programs.tmux.tmuxinator.projects for declaring projects declaratively;
each project is written to $HOME/.config/tmuxinator/<name>.yaml
Co-authored-by: Austin Horstman <khaneliman12@gmail.com>
