feat/common_query_tests

[NeonJarbas]

add initial unittests for common query and continuous dialog

also adds a new event to trigger common_query directly without going trough the intent service

[codecov]

Codecov Report

Merging #188 (bc16fda) into dev (6ceb058) will increase coverage by 3.86%.
The diff coverage is 37.58%.

❗ Current head bc16fda differs from pull request most recent head e0d428d. Consider uploading reports for the commit e0d428d to get more accurate results

@@            Coverage Diff             @@
##              dev     #188      +/-   ##
==========================================
+ Coverage   50.35%   54.22%   +3.86%     
==========================================
  Files         119      152      +33     
  Lines       10077     9533     -544     
==========================================
+ Hits         5074     5169      +95     
+ Misses       5003     4364     -639     

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]

Looks good! left some minor feedback