0d7752b010
Refactor our CMake flag handling to make it more flexible and reduce repetition: - Rename update_cxx_flags() to update_build_flags() to better reflect its expanded purpose - Generate CMake variable names internally based on configuration type instead of requiring callers to specify full variable names - Follow CMake's standard naming conventions for configuration-specific flags, see https://cmake.org/cmake/help/latest/variable/CMAKE_LANG_FLAGS.html#variable:CMAKE_%3CLANG%3E_FLAGS - Prepare groundwork for handling linker flags in addition to compiler flags in future changes Signed-off-by: Kefu Chai <kefu.chai@scylladb.com> Closes scylladb/scylladb#23842