* Reorganize and clean up RGBController API functions
* Add functions to get protected RGBController member values
* Make NetworkClient, ProfileManager, and ResourceManager friend classes so they can access protected members
* Protected previously-public RGBController members
* Information strings (name, vendor, description, version, serial location)
* Device type
* Active mode
* Flags
* LEDs vector
* LED alternate names vector
* Modes vector
* Colors vector
* Zones vector
* Add CONTROLLER_FLAG_HIDDEN to allow plugins to hide controllers from control GUI
* Add update reason codes to RGBController update callback and signal updates on more RGBController events
* Add loop zone types and segmented zone type
* Add matrix map field to segments
* Rework matrix_map_type from using pointers to vector to prevent memory leaks
* Rework KeyboardLayoutManager to return new matrix_map_type
* Add access mutex to RGBController API
* Add per-zone modes ot RGBController API
* Add JSON description functions to RGBController API
* The previous layout was not the real Nordic layout. Every character has now been fixed to use the correct, technical terms and accurate key legends. It now correctly represents the Nordic ISO layout standard.
