Add SparkFun Thing Plus RP2350 #2488

Job	Run time
Mac (macOS-12)	4m 29s
Build 0	7m 56s
Spelling, Style, Boards, Package	2m 17s
Build PlatformIO Examples	3m 38s
Build 1	8m 6s
Mac (macOS-14)	2m 3s
Build 2	8m 46s
Build 3	9m 29s
Build RP2350 0	7m 9s
Build RP2350-RISCV 0	7m 14s
Build RP2350 1	7m 45s
Build 4	8m 55s
Build TinyUSB Examples	4m 16s
Build RP2350-RISCV 1	6m 58s
Build RP2350 2	8m 14s
Build 5	8m 21s
Build RP2350-RISCV 2	7m 36s
Build RP2350 3	7m 41s
Build RP2350-RISCV 3	6m 52s
Build RP2350 4	8m 15s
Build Every Variant 0	5m 52s
Windows	3m 32s
Build RP2350-RISCV 4	7m 49s
Build Every Variant 1	2m 51s
Build RP2350-RISCV 5	8m 19s
Build RP2350 5	8m 12s
	2h 52m 35s

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