Add tmux package and common dotfiles deployment

dotfiles/common/.tmux/plugins/tmux-project/README.md

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+# tmux-project
+
+Search projects and open them in a new session.
+
+## Prequisites
+
+- find
+- [fzf](https://github.com/junegunn/fzf) (needs `fzf-tmux` to be installed)
+
+## Install
+
+### Installation with [tpm](https://github.com/tmux-plugins/tpm) (recommended)
+
+Add the following line to your `.tmux.conf`.
+
+```tmux
+set -g @plugin 'sei40kr/tmux-project'
+```
+
+---
+
+It is also recommended to add the following line to your `.tmux.conf` to prevent
+a client from being detached when the active session is destroyed.
+
+```tmux
+set detach-on-destroy no-detached
+```
+
+## Customization
+
+| Variable                        | Default value         | Description                                                                       |
+| :------------------------------ | :-------------------- | :-------------------------------------------------------------------------------- |
+| `@project-key`                  | `"g"`                 | The key to invoke the project search. If you set it to `""`, the key is disabled. |
+| `@project-base-dirs`            | `""`                  | A comma-separated list of directories and their depths to search for projects.    |
+| `@project-rooters`              | `".git"`              | A comma-separated list of rooters.                                                |
+| `@project-fzf-tmux-layout-opts` | `""`                  | The layout options for fzf-tmux. See `fzf-tmux(1)` for details.                   |
+| `@project-fzf-opts`             | `"--preview 'ls {}'"` | The options for fzf. See `fzf(1)` for details.                                    |
+
+### Setting `@project-base-dirs`
+
+`@project-base-dirs` is a comma-separated list of directories and their depths to search for projects.
+
+Each element of the list is in the following format:
+
+```
+/path/to/dir[:<min depth>[:<max depth>]]
+```
+
+- If you omit `<min depth>` and `<max depth>`, they are set to `0` and `0` respectively.
+- If you omit `<max depth>`, it is set to `<min depth>`. (means `<min depth>` is the exact depth)
+
+If you omit the depth or explicitly set it to `0`, the directory itself will be
+added as a project. In that case, you can add the directory as a project even if
+it contains no rooter.
+
+---
+
+For example, if you want to search for ghq repositories as projects:
+
+```tmux
+set -ag @project-base-dirs ,"${GHQ_ROOT}:3"
+```
+
+For example, if you want to add `~/.vim` itself as a project:
+
+```tmux
+set -ag @project-base-dirs ,"${HOME}/.vim"
+```
+
+## tmuxinator Integration
+
+tmux-project can be integrated with [tmuxinator](https://github.com/tmuxinator/tmuxinator).
+When you have tmuxinator installed and the selected project has
+`.tmuxinator.yml` at the root, tmux-project will start a new session with
+tmuxinator.
+
+## License
+
+MIT