Package, test and upload core

Update the README.md with the new automatic workflow #243

Sign in to view logs

Run time

Learn about OS pricing on GitHub Actions

Job	Run time
Build and package core	13m 38s
Test giga board	2m 47s
Test nano33ble board	2m 45s
Test niclasense board	2m 48s
Test opta board	2m 38s
Test portentac33 board	2m 38s
Test portentah7 board	2m 49s
Test ek_ra8d1 board	2m 44s
Test frdm_mcxn947 board	2m 49s
Test frdm_rw612 board	2m 46s
Publish core	14s
Collect logs	4s
Publish json	7s
	38m 47s