GHA: Add workflow for building and publishing packages. #3

Job	Run time
Build RPM / Build	1m 50s
Build DEB (bookworm, armhf) / Build	5m 13s
Build DEB (bullseye, amd64) / Build	43s
Build DEB (bookworm, amd64) / Build	48s
Build DEB (buster, amd64) / Build	46s
Build DEB (bullseye, armhf) / Build	5m 15s
Build DEB (buster, armhf) / Build	5m 16s
Build DEB (stretch, amd64) / Build	48s
Build DEB (stretch, armhf) / Build	5m 6s
Copy to remote RPM	0s
Meta RPM	0s
Copy meta to remote RPM	0s
Copy hash to remote RPM	0s
Meta DEB	0s
Copy to remote DEB	0s
Copy meta to remote DEB	0s
Copy hash to remote DEB	0s
	25m 45s

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