Rudimentary Pimoroni Plasma 2350 support #2599

Job	Run time
Build PlatformIO Examples	2m 58s
Mac (macOS-12)	1s
Spelling, Style, Boards, Package	1m 16s
Mac (macOS-14)	2m 8s
Build 0	7m 12s
Build 1	7m 11s
Build RP2350 0	7m 9s
Build 2	8m 12s
Build RP2350 1	7m 8s
Build 3	8m 25s
Build 4	7m 57s
Build RP2350 2	7m 19s
Build 5	8m 11s
Build RP2350 3	7m 27s
Build TinyUSB Examples	4m 4s
Build RP2350 4	8m 2s
Build RP2350-RISCV 0	7m 3s
Build RP2350 5	7m 40s
Build RP2350-RISCV 1	7m 1s
Build Every Variant 0	6m 50s
Build RP2350-RISCV 2	7m 16s
Windows	3m 3s
Build Every Variant 1	6m 41s
Build RP2350-RISCV 3	6m 24s
Build RP2350-RISCV 4	7m 55s
Build RP2350-RISCV 5	7m 5s
	2h 41m 38s

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