Adds simple config parser along with config_ API that:
- supports default values for options
- allows typed querying of config values
- types supported: boolean, integer, floating point and string
unknown options are ignored and LOG_WARNed on the console
So it seems I suck at writing parsers, the main loop is a little wonky but it works.
Tested:
- int, bool, double option types
- option.names.with.dots
- whitespace all over the place
- empty card10.cfg