Move CI/CD to GitHub Actions #46

Job	Run time
Test StringEnum Trimmed	31s
Timestamp	11s
Build Mac Logging	33s
Build AutoDiscovery	47s
Build macOS Shim	51s
Build Windows Shim	56s
Build and Test Libraries on macOS	30m 40s
Build Windows Pass 1	8m 1s
Build and Test Libraries on Windows	9m 4s
Build macOS Pass 1	4m 55s
Build macOS UEFS	1m 35s
Build Windows UEFS	3m 7s
Build macOS Pass 2	5m 4s
Build Windows Pass 2	7m 51s
Publish UEFS Container	1s
Publish to NuGet	1s
Publish to GitHub	1s
	1h 14m 9s

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