Start migrating to protobuf board configs #3666

Job	Run time
call-node-workflow / build	29s
build (ARCController)	2m 28s
build (Blank)	2m 17s
build (Pico)	2m 34s
build (PicoW)	2m 28s
build (BentoBox)	2m 27s
build (ergoSHIFTRev2)	2m 13s
build (FightboardV3)	2m 26s
build (FightboardV3Mirrored)	2m 16s
build (FlatboxRev4)	2m 21s
build (FlatboxRev5)	2m 26s
build (FlatboxRev5RGB)	2m 14s
build (FlatboxRev5USBPassthrough)	2m 15s
build (FlatboxRev5Southpaw)	2m 21s
build (Granola)	2m 17s
build (KB2040)	2m 22s
build (KeyboardConverter)	2m 14s
build (Haute42COSMOX)	2m 33s
build (Liatris)	2m 29s
build (MavercadeRev1)	2m 12s
build (MavercadeRev2)	2m 30s
build (MiSTercadeV2)	2m 30s
build (OpenCore0)	2m 33s
build (OpenCore0WASD)	2m 24s
build (OSUMGP-RP2040)	2m 26s
build (PicoAnn)	2m 25s
build (PicoFightingBoard)	2m 14s
build (PXPGamepad)	2m 16s
build (RanaTadpole)	2m 28s
build (ReflexCtrlGenesis6)	2m 17s
build (ReflexCtrlNES)	2m 16s
build (ReflexCtrlSaturn)	2m 34s
build (ReflexCtrlSNES)	2m 15s
build (ReflexCtrlVB)	2m 34s
build (ReflexEncodeV1.2)	2m 25s
build (ReflexEncodeV2.0)	2m 40s
build (RP2040AdvancedBreakoutBoard)	2m 26s
build (RP2040AdvancedBreakoutBoardUSBPassthrough)	2m 16s
build (RP2040MiniBreakoutBoard)	2m 19s
build (SparkFunProMicro)	2m 25s
build (WaveshareZero)	2m 25s
build (Stress)	2m 15s
build (SGFDevices)	2m 20s
build (ZeroRhythm)	2m 27s
	1h 43m 2s

Provide feedback