devel/onetbb: Switch to pkgconfig
- Configure the Port to use pkg-config over tuning CMake, add localbase, and pkgconfig to ${USES}, drop CMAKE_HWLOC_2_LIBRARY_PATH* from ${CMAKE_ARGS}; this allows the build to correctly generate bindings for hwloc > 2.5
- port{clippy|fmt|lint} maintenance
- Update ${LIB_DEPENDS} to current practices; remove shared library version
PR: 286625
Reported by: Alastair Hogge <agh@riseup.net>