Expose various APIs necessary for certificate selection logic #777

Job	Run time
Test FIPS integration	3m 3s
Test (stable)	2m 14s
Cross build from macOS to Linux (x86_64-unknown-linux-gnu)	1m 45s
Test (arm-android)	1m 56s
Cross build from macOS to Linux (FIPS) (x86_64-unknown-linux-gnu)	4m 32s
Test (arm64-android)	2m 18s
clippy	1m 30s
Test (i686-android)	1m 59s
rustfmt	11s
Test features	6m 19s
Test (x86_64-android)	1m 52s
Test (aarch64-ios)	2m 30s
Test (aarch64-ios-sim)	2m 42s
Test (x86_64-ios)	3m 9s
Test (i686-linux)	2m 25s
Test (arm-linux)	2m 17s
Test (aarch64-linux)	2m 29s
Test (arm64-macos)	2m 49s
Test (x86_64-macos)	2m 39s
Test (x86_64-mingw)	5m 21s
Test (i686-msvc)	5m 57s
Test (x86_64-msvc)	6m 4s
	1h 6m 1s

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