Add tmux package and common dotfiles deployment

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

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+basedir="$(cd "$(dirname "$0")" && pwd)"
+# shellcheck source=lib/tmux.bash
+. "${basedir}/lib/tmux.bash"
+
+key="$(get_tmux_option '@project-key' 'g')"
+if [[ -n "$key" ]]; then
+	tmux bind-key "$key" run-shell -b "${basedir}/libexec/switch-project.bash"
+fi