Brand new Game/Racers module

* Structured in OOP (helps a _lot_ of stuff)
* Now uses [JSON](http://json.org/) based settings file, removing many issues with older
format
* Automatically converts existing CFG settings to JSON (when possible)
* Confirms settings _before_ writing them, a big issue previously
* Split user input from settings manipulation functions
* No longer imports `PatchIt` module to return to main menu :smiley:
* Is a singleton
* Overall MUCH better
* Lots of underscores to camelCase conversion

This breaks the `Patch/install` and `Patch/create` modules, as they still rely on the old CFG based settings. Those will be fixed in a separate PR.