Relax dtype requirements for int4 and float8 quants in autoquant (#1571)

* Relax dtype requirements for int4 quants in autoquant

Summary:
Some of the int4 quant only works with bfloat16/float16, previously we require
the model to be in correct dtype to apply these in autoquant, this PR relaxes the constraints by
converting weight and activation to compatible dtypes

Test Plan:
python test/integration/test_integration.py -k test_autoquant_int4wo

Reviewers:

Subscribers:

Tasks:

Tags:

* remove prints

* add float8

* run pre-commit

* run pre-commit

* manual format

* enable bias=True test

* remove print