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[CUDA] 3/5/6-bit quants for qmm_naive - #3352
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Followup to #3315 that adds support for 3/5/6-bit affine quantization, the tricky part with CuTe is that by default the tiled copy only supports number of bits that is power of 2, for reading 3/5/6-bit weights we have to add some custom integer types (
uint24_t/uint40_t/uint48_t) to make tiled copy compile.