Coding - PCH improvements #118

Job	Run time
Prepare and Build on Ubuntu with Clang (x64)	17m 38s
Prepare and Build on macOS with Clang (x64)	9m 42s
Prepare and Build on macOS with GCC (x64)	10m 2s
Prepare and Build on Ubuntu with GCC (x64)	26m 45s
Prepare and Build on Windows with Clang (x64)	10m 55s
Prepare and Build on Windows with MSVC (x64)	8m 48s
Test on Windows (x64)	0s
Test on macOS (x64)	1m 32s
Test on macOS with GCC (x64)	1m 46s
Test on Windows with Clang (x64)	0s
Test on Linux with Clang (x64)	11m 40s
Test on Linux with GCC (x64)	2m 35s
Summarize and Send PR Message	1s
	1h 41m 24s

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