feat: move debug logging behind a debug flag that is disabled by default #1145

Job	Run time
Test (stable)	20s
Test (beta)	54s
Test (nightly)	29s
Test (linux32)	1m 6s
Test (macos)	1m 30s
Clippy	7s
Test CUDA support	36s
Test (aarch64-macos)	36s
Test build-std (aarch64-tvos)	4m 57s
Test (aarch64-ios)	40s
Test build-std (aarch64-tvos-sim)	2m 17s
MSRV (ubuntu-latest)	21s
Test (win32)	1m 14s
Rustfmt	5s
Test build-std (x86_64-tvos)	4m 34s
MSRV (windows-latest)	42s
Test (win64)	2m 3s
Test (mingw32)	1m 31s
Test (mingw64)	1m 32s
Test (windows-2019)	2m 0s
Test (windows-aarch64, windows-latest, stable, aarch64-pc-windows-msvc, --no-run)	1m 9s
	28m 43s

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