Add ML-KEM Feature Probe and Test

[alexw91]

Resolved issues:

N/A

Description of changes:

Part 2 in a multi-part series to add X25519MLKEM768 support to s2n. This PR adds a LibCrypto feature probe for ML-KEM Support, and unit test that confirms feature probe works as expected.

Call-outs:

• Docker Containers in CI do not yet have a new enough version of AWS-LC

Testing:

Tested locally against AWS-LC built from the tip of their main branch.

-- The C compiler identification is GNU 9.5.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/gcc-9 - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detected CMAKE_SYSTEM_PROCESSOR as x86_64
-- Detected 64-Bit system
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE  
-- FOUND AWS-LC CRYPTO cmake config - static
-- Using libcrypto from the cmake path
-- Enabling libcrypto interning
-- CMAKE_AR found: /usr/bin/ar
-- CMAKE_RANLIB found: /usr/bin/ranlib
-- CMAKE_OBJCOPY found: /usr/bin/objcopy
-- feature S2N_ATOMIC_SUPPORTED: TRUE
-- feature S2N_CLOEXEC_SUPPORTED: TRUE
-- feature S2N_CLOEXEC_XOPEN_SUPPORTED: TRUE
-- feature S2N_CLONE_SUPPORTED: TRUE
-- feature S2N_CPUID_AVAILABLE: TRUE
-- feature S2N_DIAGNOSTICS_POP_SUPPORTED: TRUE
-- feature S2N_DIAGNOSTICS_PUSH_SUPPORTED: TRUE
-- feature S2N_EXECINFO_AVAILABLE: TRUE
-- feature S2N_FALL_THROUGH_SUPPORTED: TRUE
-- feature S2N_FEATURES_AVAILABLE: TRUE
-- feature S2N_KTLS_SUPPORTED: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_EC_KEY_CHECK_FIPS: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_EVP_AEAD_TLS: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_EVP_KEM: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_EVP_MD5_SHA1_HASH: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_EVP_MD_CTX_SET_PKEY_CTX: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_EVP_RC4: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_FLAG_NO_CHECK_TIME: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_HKDF: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_MLKEM: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_RSA_PSS_SIGNING: TRUE
-- feature S2N_LIBCRYPTO_SUPPORTS_X509_STORE_LIST: TRUE
-- feature S2N_LINUX_SENDFILE: TRUE
-- feature S2N_MADVISE_SUPPORTED: TRUE
-- feature S2N_MINHERIT_SUPPORTED: FALSE
-- feature S2N_STACKTRACE: TRUE
-- AWS::crypto target type: STATIC_LIBRARY
-- crypto_STATIC_LIBRARY: /home/ANT.AMAZON.COM/aweibel/workspace/aws-sdks/local-c-install/lib/libcrypto.a
-- crypto_INCLUDE_DIR: /home/ANT.AMAZON.COM/aweibel/workspace/aws-sdks/local-c-install/include
-- Running tests with environment: S2N_DONT_MLOCK=1
-- Configuring done
-- Generating done
-- Build files have been written to: /home/ANT.AMAZON.COM/aweibel/workspace/github/s2n/build
[  0%] Generating libcrypto.symbols
[  0%] Built target s2n_libcrypto
...

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[lrstewart]

We need to confirm that S2N_LIBCRYPTO_SUPPORTS_MLKEM is true for at least a subset of the CI (and at least one asan or valgrind test) before merging this.

[lrstewart]

We'd usually name this something like s2n_pq_mlkem_test, so it's with all the other s2n_pq tests.