Add mobile extension to gui interface for mobile gui app

[AIIX]

• Adds mobile extension to gui interface for mobile gui app that handles internal navigation of the application and skill view when running on Android or Linux Mobile
• Provides homescreen support for Mobile App

[codecov]

Codecov Report

Merging #193 (25141a4) into dev (6ceb058) will increase coverage by 3.16%.
The diff coverage is 36.68%.

@@            Coverage Diff             @@
##              dev     #193      +/-   ##
==========================================
+ Coverage   50.35%   53.52%   +3.16%     
==========================================
  Files         119      153      +34     
  Lines       10077     9781     -296     
==========================================
+ Hits         5074     5235     +161     
+ Misses       5003     4546     -457     

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 139 more

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