v3.0.0

What's Changed

• Moved SDK code to separate repository
• Added SDK build via CMake
• Added external dependencies link via find_package
• Supported CMake install for SDK
• Replaced util types (TString, TStringBuf, TMaybe, TVector, THolder, etc.) with STL types (std::string, std::string_view, std::optional, std::vector, std::unique_ptr)
• Separated public headers, sources and tests in different directories: include/, src/ and tests/
• Removed patched standard library
• Added ThrowOnError functions for TStatus
• Supported dev containers for SDK development

Full Changelog: https://github.com/ydb-platform/ydb-cpp-sdk/commits/v3.0.0