refactor(shields): MurphPad #7699

Job	Run time
get-grouped-hardware	13s
get-changed-files	7s
core-coverage	0s
board-changes	13s
nightly	0s
compile-matrix	3s
build (adafruit_kb2040, [{"shield":"murphpad"}])	1m 46s
build (bluemicro840_v1, [{"shield":"murphpad"}])	2m 3s
build (boardsource_blok, [{"shield":"murphpad"}])	1m 31s
build (mikoto_520, [{"shield":"murphpad"}])	1m 44s
build (nice_nano, [{"shield":"murphpad"}])	1m 45s
build (nice_nano_v2, [{"shield":"murphpad"}])	1m 44s
build (nrfmicro_11, [{"shield":"murphpad"}])	1m 44s
build (nrfmicro_11_flipped, [{"shield":"murphpad"}])	1m 49s
build (nrfmicro_13, [{"shield":"murphpad"}])	1m 46s
build (nrfmicro_13_52833, [{"shield":"murphpad"}])	1m 45s
build (proton_c, [{"shield":"murphpad"}])	1m 37s
build (puchi_ble_v1, [{"shield":"murphpad"}])	1m 46s
build (sparkfun_pro_micro_rp2040, [{"shield":"murphpad"}])	1m 31s
	23m 7s

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