feat/queue_audio

[NeonJarbas]

allow to queue audio files for playback via messagebus

this ensures they are played between TTS and not over it

future work can be done to support the SSML audio tag in all engines using this functionality

[codecov]

Codecov Report

Merging #180 (c5c4d02) into dev (6ceb058) will increase coverage by 2.57%.
The diff coverage is 37.52%.

@@            Coverage Diff             @@
##              dev     #180      +/-   ##
==========================================
+ Coverage   50.35%   52.92%   +2.57%     
==========================================
  Files         119      152      +33     
  Lines       10077     9510     -567     
==========================================
- Hits         5074     5033      -41     
+ Misses       5003     4477     -526     

Impacted Files	Coverage Δ
mycroft/audio/__main__.py	0.00% <0.00%> (ø)
mycroft/client/enclosure/__main__.py	0.00% <0.00%> (ø)
mycroft/client/enclosure/mark1/arduino.py	0.00% <0.00%> (ø)
mycroft/client/enclosure/mark1/eyes.py	0.00% <0.00%> (ø)
mycroft/client/enclosure/mark1/mouth.py	0.00% <0.00%> (ø)
mycroft/client/speech/__main__.py	0.00% <0.00%> (ø)
mycroft/client/speech/hotword_factory.py	0.00% <0.00%> (-88.89%)	⬇️
mycroft/client/speech/service.py	0.00% <0.00%> (ø)
mycroft/client/speech/silence.py	0.00% <0.00%> (-42.86%)	⬇️
mycroft/client/text/__init__.py	0.00% <0.00%> (ø)
... and 138 more

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[NeonDaniel]

Just a note that sending audio file paths will not work under Neon Docker containers as the FS isn't shared. Will probably override in neon_audio to accept b64-encoded files as well as paths, but probably out of scope for this PR

[JarbasAl]

Just a note that sending audio file paths will not work under Neon Docker containers as the FS isn't shared. Will probably override in neon_audio to accept b64-encoded files as well as paths, but probably out of scope for this PR

can send a follow up PR for that, don't mind adding native support for b64 under an optional different key and check for both.

But this is worth further discussion as maybe it should live in ovos_workshop