[clang-tools-extra] [clang-tidy] Add support for `-ignore-insert-conflict` in `run-clang-tidy.py` (PR #127066)

[Vicente Mataix Ferrándiz via cfe-commits]

loumalouomega wrote:

> LGTM. Please update release note also. After that, feel free to ping me to merge it if you do not have permission.

Can you help me?, I have no experience in this repository 

https://github.com/llvm/llvm-project/pull/127066