Expose various APIs necessary for certificate selection logic #802

Job	Run time
clippy	6m 34s
rustfmt	14s
Cross build from macOS to Linux (x86_64-unknown-linux-gnu)	1m 46s
Cross build from macOS to Linux (FIPS) (x86_64-unknown-linux-gnu)	5m 25s
Test features	6m 20s
Test (stable)	6m 1s
Test FIPS integration	2m 46s
Test (arm-android)	7m 12s
Test (arm64-android)	2m 2s
Test (i686-android)	3m 9s
Test (x86_64-android)	1m 59s
Test (aarch64-ios)	2m 19s
Test (aarch64-ios-sim)	3m 57s
Test (x86_64-ios)	2m 16s
Test (i686-linux)	2m 21s
Test (arm-linux)	4m 28s
Test (aarch64-linux)	2m 20s
Test (arm64-macos)	5m 17s
Test (x86_64-macos)	2m 33s
Test (x86_64-mingw)	8m 5s
Test (i686-msvc)	5m 17s
Test (x86_64-msvc)	7m 13s
	1h 29m 34s

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