[Arm] Support INT16 Slice ops with TOSA reference model run

[Ninja91]

With #13798, we add INT16 slice op support in quantization and add tests for TOSA, U55 & U85 which as expected fails. This task is to build support through the entire tool stack.

cc: @per @digantdesai @gggekov

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218