JIT

Explore using sccache instead of ccache in CI. #22

Job	Run time
Interpreter (Debug)	6m 40s
Free-Threaded (Debug) (19)	10m 18s
i686-pc-windows-msvc/msvc (Debug)	18m 26s
i686-pc-windows-msvc/msvc (Release)	11m 4s
x86_64-pc-windows-msvc/msvc (Debug)	18m 1s
x86_64-pc-windows-msvc/msvc (Release)	10m 30s
aarch64-pc-windows-msvc/msvc (Debug)	4m 39s
aarch64-pc-windows-msvc/msvc (Release)	6m 27s
x86_64-apple-darwin/clang (Debug)	18m 23s
x86_64-apple-darwin/clang (Release)	7m 13s
aarch64-apple-darwin/clang (Debug)	8m 46s
aarch64-apple-darwin/clang (Release)	8m 55s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 20s
x86_64-unknown-linux-gnu/gcc (Release)	5m 30s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 11m 27s
aarch64-unknown-linux-gnu/gcc (Release)	33m 55s
	4h 7m 34s

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