feat: tpm (Tmux Plugin Manager) support (#2)

Co-authored-by: Pocco81 <pocco451@gmail.com>
Co-authored-by: Lokesh Krishna <lokesh@low-key.me>
Co-authored-by: Pocco81 <58336662+Pocco81@users.noreply.github.com>
Co-authored-by: vinnyA3 <vincent.aceto@gmail.com>
Co-authored-by: winston <hey@winston.sh>

catppuccin.tmux

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+get-tmux-option() {
+  local option value default
+  option="$1"
+  default="$2"
+  value="$(tmux show-option -gqv "$option")"
+
+  if [ -n "$value" ]; then
+    echo "$value"
+  else
+    echo "$default"
+  fi
+}
+
+main() {
+  local theme
+  theme="$(get-tmux-option "@catppuccin_flavour" "mocha")"
+  tmux run -b "$CURRENT_DIR/catppuccin-${theme}.tmuxtheme"
+}
+
+main "$@"