GHA: Add workflow for building and publishing packages. #15

Job	Run time
Build RPM / Build	2m 5s
Build DEB (bullseye, amd64) / Build	43s
Build DEB (bookworm, amd64) / Build	44s
Build DEB (bookworm, armhf) / Build	5m 17s
Build DEB (buster, amd64) / Build	53s
Build DEB (buster, armhf) / Build	5m 27s
Build DEB (bullseye, armhf) / Build	5m 20s
Build DEB (stretch, amd64) / Build	41s
Build DEB (stretch, armhf) / Build	5m 8s
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
	26m 18s

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