[mlir][tosa] Add quantized lowering for matmul and fully_connected

Added the named op variants for quantized matmul and quantized batch matmul
with the necessary lowerings/tests from tosa's matmul/fully connected ops.
Current version does not use the contraction op interface as its verifiers
are not compatible with scalar operations.

Differential Revision: https://reviews.llvm.org/D105063