Added basic support for int2/uint2 dtypes to JAX
Added basic support for int2/uint2 dtypes to JAX

#21369

FUTURE_COPYBARA_INTEGRATE_REVIEW=https://github.com/openxla/xla/pull/12991 from openxla:gemm_fusion_autotuner_refactor 44682f67eb6e9c521f381a7c3dd93fee95f59366
