docs: add readme for the .config directory

.config/README.md

@@ -0,0 +1,18 @@
+# `.config` directory
+
+This directory contains configuration files for various applications.
+The `stow` command is used to symlink these files to the `~/.config` directory.
+
+## Contents
+
+- [alacritty](alacritty) - Terminal emulator ([docs](https://alacritty.org))
+- [bat](bat) - Enhanced `cat` command ([docs](https://github.com/sharkdp/bat))
+- [cursor](cursor) - AI code editor ([docs](https://www.cursor.com))
+- [delta](delta) - Pager with syntax-highlighting ([docs](https://github.com/dandavison/delta))
+- [fish](fish) - Shell ([docs](https://fishshell.com))
+- [lazygit](lazygit) - Terminal-based git GUI ([docs](https://github.com/jesseduffield/lazygit))
+- [nvim](nvim) - Current neovim configuration (based on [LazyVim](http://www.lazyvim.org))
+- [nvim-old](nvim-old) - Previous neovim configuration (based on [kickstart.nvim](https://github.com/nvim-lua/kickstart.nvim))
+- [starship](starship) - Prompt ([docs](https://starship.rs))
+- [tmux](tmux) - Terminal multiplexer ([docs](https://github.com/tmux/tmux/wiki))
+- [yazi](yazi) - Terminal file manager ([docs](https://yazi-rs.github.io))