Implement Jenkins executor #266

Job	Run time
Timestamp	4s
Test StringEnum Trimmed	42s
Build Libraries on macOS	4m 50s
Build macOS Pass 1	4m 55s
Build Linux Pass 1	7m 54s
Build and Test Libraries on Windows	8m 55s
Build Windows Pass 1	8m 12s
Build Linux Shim	33s
Build macOS Shim	40s
Build Windows Shim	55s
Build macOS UEFS	1m 20s
Build Windows UEFS	3m 1s
Build macOS Pass 2	5m 32s
Build Linux Pass 2	7m 48s
Build Windows Pass 2	7m 55s
Publish UET Container (with Wine)	38s
Publish UET Container	14s
Publish to GitHub	0s
Publish to NuGet	0s
Test Schema Generation	15s
Publish UEFS Container	0s
	1h 4m 23s

Provide feedback