[Quant][PT2E]Enable x86 inductor quantizer (#98730)
**Summary**
- Enable `X86InductorQuantizer` basics.
- Recipe to annotate conv2d is added.
**Test Plan**
```
python -u -m pytest -s -v test_x86inductor_quantizer.py -k TestQuantizePT2EX86Inductor
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/98730
Approved by: https://github.com/jgong5, https://github.com/jerryzh168
