Add CI/CD and brought repository into compliance with modern standards #4

Job	Run time
Build documentation	33s
Windows x64 debug	2m 38s
Windows x64 release	1m 27s
Linux x64 release	27s
Linux x64 debug	26s
Publish packages to GitHub	12s
Publish documentation	12s
Publish packages to NuGet.org	0s
Render workflow images	0s
	5m 55s

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