Enable updating plugins via cli executable

scripts/update_plugin_prompt_handler.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+if [ $# -eq 0]; then
+	exit 0
+fi
+
+source "$CURRENT_DIR/shared_functions.sh"
+
+main() {
+	"$CURRENT_DIR/update_plugin.sh" --tmux-echo "$*"
+	reload_tmux_environment
+	end_message
+}
+main "$*"