Implemented linux auto tracking

[MattEqualsCoder]

This adds command line auto tracking to the CrossPlatform app.

So several things are a part of these changes:

• Created an ISpeechRecognitionEngine which has an enabled/disabled implementation for usage between Windows/desktop
• For all of the tracker voice modules (some of which aren't just used for voice stuff), I pulled out all of the add command statements into an abstract method "AddCommands" which is only called on Windows by the TrackerModuleFactory
• I updated a few configs to be saved as enums in the YAML rather than integer. These should be converted when the JSON config gets converted into YAML
• I added an optional setting to automatically track the "hey tracker, take a look at this" commands. I'll add this to the Windows UI in a subsequent pull request