don't clone as root

yet another dotfiles repo. here are my quirks:

• i .gitignore * and .*. then i unignore e.g. !.config. this is because linux developers get off to dumping state in ~
• root inherits my .bashrc and .gitconfig, so they're 644 root root
• neovim is a special headache where i mkOutOfStoreSymlink inside the home-manager module. this fixes mason/treesitter/hardcoding binaries with a store object while providing lazy-nvim a writeable symlink