feat: add back gc protect callback (#94) #476

Job	Run time
Cross Build Only (x86_64-unknown-freebsd)	50s
Cross Test (i686-unknown-linux-gnu)	1m 42s
Android Build Only (aarch64-linux-android)	1m 13s
Android Build Only (armv7-linux-androideabi)	1m 10s
Checking docs	1m 9s
Checking fmt	26s
check_semver	1m 10s
clippy_check	1m 45s
Minimal Supported Rust Version	1m 12s
cargo deny	27s
codespell	4s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	1s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	1m 59s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	2m 1s
CI Test Suite / Tests (ubuntu-latest, stable, none)	1m 15s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	1m 40s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 21s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	1m 37s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	1m 37s
CI Test Suite / Tests (ubuntu-latest, stable, all)	1m 41s
	24m 20s

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