Create a common API to cache CUDA/OpenCL kernels #2857

This would include caching to disk feature as well.

• Create unified API for caching kernels - WIP
• Port CUDA kernels to use new API - Refactor image proc fns to use nvrtc API #2560 Cleanup cuda sources #2790
• Port OpenCL kernels to use new API
• (Optional) Add disk store support for OpenCL binaries
• (Optional) Unify disk store feature for compiled kernels