Feature: Flash blank check #2847

Job	Run time
build-macos (macos-13)	37s
build-macos (macos-13, gcc@11)	1m 36s
build-macos (macos-14)	31s
build-linux (jammy, 96b_carbon)	34s
build-macos (macos-13, gcc@12)	1m 7s
build-macos (macos-latest)	25s
build-linux (jammy, blackpill-f401cc)	54s
build-macos (macos-13, gcc@13)	1m 18s
build-linux (jammy, blackpill-f401ce)	35s
build-mingw (windows-2022, mingw64)	1m 49s
build-macos (macos-13, gcc@14)	1m 23s
build-linux (jammy, blackpill-f411ce)	48s
build-mingw (windows-2022, ucrt64)	1m 43s
build-msvc (meson, windows-2022)	57s
build-macos (macos-14, gcc@11)	1m 7s
build-linux (jammy, bluepill)	1m 29s
build-mingw (windows-2022, clang64)	3m 0s
build-macos (macos-14, gcc@12)	51s
build-linux (jammy, ctxlink)	40s
build-macos (macos-14, gcc@13)	51s
build-linux (jammy, f072)	51s
size-diff	41s
build-macos (macos-14, gcc@14)	1m 27s
build-linux (jammy, f3)	50s
build-linux (jammy, f4discovery)	44s
build-linux (jammy, hydrabus)	39s
build-linux (jammy, launchpad-icdi)	40s
build-linux (jammy, native)	35s
build-linux (jammy, native-uncommon)	51s
build-linux (jammy, native-st-clones)	35s
build-linux (jammy, native-riscv)	37s
build-linux (jammy, native-remote)	43s
build-linux (jammy, stlink)	35s
build-linux (jammy, stlinkv3)	32s
build-linux (jammy, swlink)	10m 18s
	42m 53s

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