Add example only for the verbose snap

Same as `./client_sample.rb -s`
But easier to find, link and reason about.

examples/11_snap_debugger.rb

@@ -0,0 +1,12 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+# connects to a server and prints color annotated snap items
+# https://chillerdragon.github.io/teeworlds-protocol/img/snap_dump_07.png
+
+require_relative '../lib/teeworlds_client'
+
+client = TeeworldsClient.new(verbose: false, verbose_snap: true)
+
+# connect to localhost and block the current thread
+client.connect('localhost', 8303, detach: false)