Move CI/CD to GitHub Actions #43

Job	Run time
Test StringEnum Trimmed	37s
Timestamp	5s
Build AutoDiscovery	52s
Build Mac Logging	30s
Build macOS UEFS	1m 44s
Build Windows UEFS	3m 5s
Build and Test Libraries on Windows	9m 4s
Build and Test Libraries on macOS	56m 56s
Build macOS Pass 1	5m 41s
Build Windows Pass 1	7m 46s
Build macOS Shim	35s
Build Windows Shim	1m 1s
Build Windows Pass 2	1m 21s
Build macOS Pass 2	1m 13s
Publish to NuGet	1s
Publish UEFS Container	1s
Publish to GitHub	1s
	1h 30m 33s

Provide feedback