OpenSSL EVP-based hashers verified against NIST known-answer vectors.
HashDetector auto-identifies hash type from hex length with validation.
15 new tests, all passing.
Includes CMakeLists.txt, CMakePresets.json, .clang-format, .clang-tidy,
Config.hpp (all constants), Concepts.hpp (Hasher/AttackStrategy concepts),
and stub implementations for all source files. All 6 stub tests pass.