Add timing metrics for response to handler in MQ client (#154)

# Description
Adds a timestamp when response is emitted for clients to calculate how
long it takes to be handled

# Issues
<!-- If this is related to or closes an issue/other PR, please note them
here -->

# Other Notes
NeonGeckoCom/neon_speech#181

---------

Co-authored-by: Daniel McKnight <[email protected]>

.github/workflows/license_tests.yml

@@ -5,4 +5,6 @@ on:
 
 jobs:
   license_tests:
-    uses: neongeckocom/.github/.github/workflows/license_tests.yml@master
+    uses: neongeckocom/.github/.github/workflows/license_tests.yml@master
+    with:
+      packages-exclude: '^(precise-runner|fann2|tqdm|bs4|ovos-phal-plugin|ovos-ocp|bitstruct|audioread).*'

neon_audio/tts/neon.py

@@ -31,6 +31,8 @@
 import os
 
 from os.path import dirname
+from time import time
+
 from json_database import JsonStorageXDG
 from ovos_bus_client.message import Message
 from ovos_plugin_manager.language import OVOSLangDetectionFactory,\
@@ -339,6 +341,7 @@ def execute(self, sentence: str, ident: str = None, listen: bool = False,
             # TODO dedicated klat handler/plugin
             if "klat_data" in message.context:
                 LOG.info("Sending klat.response")
+                message.context['timing']['response_sent'] = time()
                 self.bus.emit(
                     message.forward("klat.response",
                                     {"responses": responses,