Add bindings for SSL_CB_ACCEPT_EXIT and SSL_CB_CONNECT_EXIT #974

Job	Run time
clippy	8m 7s
rustfmt	6s
Cross build from macOS to Linux (x86_64-unknown-linux-gnu)	2m 48s
Cross build from macOS to Linux (FIPS) (x86_64-unknown-linux-gnu)	4m 19s
Test features	7m 51s
Test FIPS integration	2m 55s
Test (stable)	2m 12s
Test (arm-android)	2m 5s
Test (arm64-android)	2m 30s
Test (i686-android)	2m 1s
Test (x86_64-android)	1m 48s
Test (aarch64-ios)	2m 51s
Test (aarch64-ios-sim)	2m 52s
Test (x86_64-ios)	3m 17s
Test (i686-linux)	2m 15s
Test (arm-linux)	2m 21s
Test (aarch64-linux)	2m 23s
Test (arm64-macos)	3m 3s
Test (x86_64-macos)	2m 46s
Test (x86_64-mingw)	7m 47s
Test (i686-msvc)	6m 46s
Test (x86_64-msvc)	5m 43s
	1h 18m 46s

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