Add support for MyMakers RP2350B board #3063

Job	Run time
Spelling, Style, Boards, Package, PIO	2m 38s
Build RP2350 2	7m 17s
Build RP2350 1	5m 59s
Build RP2350-RISCV 0	6m 23s
Build RP2350 5	6m 14s
Build RP2350 3	7m 19s
Build RP2350 4	6m 51s
Build RP2350-RISCV 1	5m 41s
Build RP2350-RISCV 3	7m 50s
Build RP2350 0	6m 20s
Build RP2350-RISCV 4	6m 24s
Build RP2350-RISCV 2	7m 0s
Build 3	8m 5s
Build RP2350-RISCV 5	5m 39s
Build 4	7m 16s
Build 1	7m 12s
Build PlatformIO Examples	3m 17s
Build Every Variant 0	6m 46s
Build 5	6m 10s
Build TinyUSB Examples	4m 17s
Mac (macOS-13)	4m 48s
Build 2	8m 22s
Build 0	6m 17s
Mac (macOS-14)	2m 39s
Build Every Variant 2	6m 27s
Build Every Variant 1	6m 44s
Windows	4m 1s
Build Every Variant 3	6m 26s
	2h 50m 22s

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