Expose various APIs necessary for certificate selection logic #791

Job	Run time
clippy	51s
Cross build from macOS to Linux (x86_64-unknown-linux-gnu)	2m 11s
Cross build from macOS to Linux (FIPS) (x86_64-unknown-linux-gnu)	23s
Testing pulling llvm	24s
rustfmt	4s
Test features	6m 15s
Test FIPS integration	2m 48s
Test (stable)	2m 4s
Test (arm-android)	1m 50s
Test (arm64-android)	2m 1s
Test (i686-android)	1m 50s
Test (x86_64-android)	2m 2s
Test (aarch64-ios)	3m 45s
Test (aarch64-ios-sim)	6m 48s
Test (x86_64-ios)	3m 20s
Test (i686-linux)	2m 35s
Test (arm-linux)	2m 59s
Test (aarch64-linux)	2m 24s
Test (arm64-macos)	2m 50s
Test (x86_64-macos)	2m 15s
Test (x86_64-mingw)	6m 1s
Test (i686-msvc)	7m 30s
Test (x86_64-msvc)	5m 28s
	1h 8m 38s

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