* Add allocation-free C++ SIP022 codecs
TCP request/response streams with the salt echo between the two
directions, an exact-match salt pool on FixedLru, and UDP packets sealed
and opened in place with caller-owned session state. Differentially
tested against aead2022.cpp in both roles; the steady phase allocates
nothing.
* Include <algorithm> for std::min in test_crypto_aead2022_cpp.cpp
* Include C++ headers before crypto.h in test_crypto_aead2022_cpp.cpp
crypto.h defines min/max macros for the C sources; libstdc++ headers
included after it fail to parse.
