core: pinmux: implement rough solution #777

Job	Run time
Build and package cores	11m 51s
Split off zephyr_unoq	12s
Split off zephyr	9s
Split off zephyr_main	8s
Split off zephyr_contrib	8s
Test zephyr_main:portentac33	2m 39s
Test zephyr_main:nano33ble	2m 27s
Test zephyr_main:opta	2m 37s
Test zephyr:unoq	2m 24s
Test zephyr_main:portentah7	2m 27s
Test zephyr_contrib:frdm_mcxn947	2m 29s
Test zephyr_main:niclasense	2m 29s
Test zephyr_contrib:frdm_rw612	2m 28s
Test zephyr_contrib:ek_ra8d1	2m 18s
Test zephyr_main:giga	1m 57s
Collect logs	10s
Publish jsons	13s
verify-core	0s
Publish core	0s
cleanup-artifacts	3s
	37m 9s

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