WiFi: add scan() #810

Job	Run time
Build and package cores	8m 56s
Split off zephyr	15s
Split off zephyr_main	15s
Split off zephyr_contrib	6s
Split off zephyr_unoq	18s
Test zephyr_main:niclasense	2m 28s
Test zephyr_contrib:ek_ra8d1	2m 19s
Test zephyr_main:opta	2m 27s
Test zephyr_main:giga	2m 28s
Test zephyr_main:nano33ble	2m 26s
Test zephyr_main:portentac33	2m 2s
Test zephyr_main:portentah7	2m 31s
Test zephyr_contrib:frdm_rw612	2m 27s
Test zephyr:unoq	2m 19s
Test zephyr_contrib:frdm_mcxn947	2m 25s
Collect logs	6s
Publish jsons	20s
verify-core	0s
Publish core	-1s
cleanup-artifacts	3s
	34m 10s

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