Porting the improved K-Quant CUDA kernels to OpenCL (#1966)
* Added broken new q4k quant
* xx + ib0
* Fix q2_k fast kernel
* Use preprocessor for QK_K
* Add q6_k fast matmul kernel
* ported q3k speedup successfully
* ported q2k and q5k speedups
* remove old dot kernels and template
* fixed global const struct types
* fixing address spaces
* fixed string too long CI issue
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Co-authored-by: 0cc4m <picard12@live.de>
