Interpreter support for quantized type

[sdasgup3]

The interpreter in its current form does not support quantized type and operations on that type.
The issue is to (1) explore the use-cases and (2) enable support for the same.

Re (2): One option could be to decompose uisng mhlo-quant-legalize-to-int the quantized type to primitive math using before doing interpreter evaluation.

[sdasgup3]

• Port mhlo-quant-legalize-to-int pass to StableHLO (Port mhlo-quant-legalize-to-int pass to StableHLO #2383)
• Lower shape.cstr_broadcastable op in ShapeLegalizeToHLO (Lower shape.cstr_broadcastable op in ShapeLegalizeToHLO #2384)
• Add a pass-pileline line to convert quantized StableHLO program to math equivalent before evaluation (Interpreter support for quantized type #2388)