Enable optional GPROF profiling of apps #2537

Job	Run time
Spelling, Style, Boards, Package	18s
Build PlatformIO Examples	3m 39s
Build 0	5m 6s
Mac (macOS-12)	1s
Build 1	5m 10s
Mac (macOS-14)	2m 56s
Build RP2350 0	5m 4s
Build 2	5m 6s
Build RP2350 1	5m 5s
Build RP2350-RISCV 0	5m 4s
Build 3	4m 5s
Build TinyUSB Examples	1m 41s
Build RP2350-RISCV 1	5m 5s
Build 4	5m 5s
Build RP2350 2	5m 3s
Build RP2350-RISCV 2	5m 3s
Build 5	5m 5s
Build RP2350 3	5m 0s
Build RP2350-RISCV 3	5m 2s
Build RP2350 4	5m 1s
Build Every Variant 0	14s
Build RP2350-RISCV 4	5m 2s
Build RP2350 5	5m 9s
Build Every Variant 1	1s
Build RP2350-RISCV 5	2m 2s
Windows	1s
	1h 36m 8s

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