Init quantization backend config for inductor (#96476)
**Summary**
Init the backend config file with quantization recipes for quantization 2.0 inductor path. In this PR, we only init the recipe for `convolution` and `convolution_relu`.
**Test Plan**
```
clear && python -m pytest test_quantization.py -k test_inductor_backend_config_conv
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/96476
Approved by: https://github.com/jgong5, https://github.com/EikanWang, https://github.com/jerryzh168
