Add CI/CD and brought repository into compliance with modern standards #3

Job	Run time
Windows x64 debug	1m 2s
Linux x64 debug	23s
Build documentation	31s
Windows x64 release	1m 1s
Linux x64 release	25s
Publish packages to GitHub	15s
Publish documentation	12s
Publish packages to NuGet.org	0s
Render workflow images	-1s
	3m 48s

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