[clang-tools-extra] [tool] Add support for `-ignore-insert-conflict` option in `clang-apply-replacements` (PR #127066)

[Vicente Mataix Ferrándiz via cfe-commits]

loumalouomega wrote:

> LGTM except for some minor nits. Also, the commit message is misleading, it should be something like:
> 
> ```
> [clang-tidy] Add support for `-ignore-insert-conflict` in `run-clang-tidy.py`
> ```

Okay, I don'w know the style. BTW,I applied tour comments

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