[quant][graphmode][fx] Add support for additional_{fusion/quant}_pattern (#46346)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/46346
Allow user to provide additional fusion/quant patterns for fx graph mode
Test Plan: Imported from OSS
Reviewed By: vkuzo
Differential Revision: D24317437
fbshipit-source-id: 719927cce50c74dffa4f848bd5c98995c944a26a
