[SPIRV] support builtin functions

The patch adds support for OpenCL and SPIR-V built-in functions.
Their detection and properties are implemented using TableGen.
Five tests are added to demonstrate the improvement.

Differential Revision: https://reviews.llvm.org/D132024



Co-authored-by: Aleksandr Bezzubikov <zuban32s@gmail.com>
Co-authored-by: Michal Paszkowski <michal.paszkowski@outlook.com>
Co-authored-by: Andrey Tretyakov <andrey1.tretyakov@intel.com>
Co-authored-by: Konrad Trifunovic <konrad.trifunovic@intel.com>