Refactor clang_tidy.py (#61119)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/61119
This change spilts the clang-tidy CI job into smaller steps and uses a
refactored version of the clang_tidy.py script.
The new folder structure is as follows:
```
tools/linter/clang_tidy
|_ __main__py
|_ requirements.txt
|_ run.py
|_ setup.sh
```
`__main__.py`
This script will run `tools/linter/clang_tidy/setup.sh` if a `build`
directory doesn't exist, mimicing what used to be done as a separate
step in the CI job.
After that, it will invoke `clang-tidy` with default arguments being
declared in the script itself (as opposed to declaring them in
lint.yml).
The reasoning behind this approach is two-fold:
- Make it easier to run `clang-tidy` locally using this script
- De-duplicate the option passing
`requirements.txt`
Contains a list of additional python dependencies needed by the
`clang-tidy` script.
`setup.sh`
If a build directory doesn't exist, this command will run the necessary
codegen and build commands for running `clang-tidy`
Example usage:
```
python3 tools/linter/clang_tidy --parallel
```
Notice that we don't have to put the `.py` at the end of `clang_tidy`.
Test Plan:
Run the following command:
```
python3 tools/linter/clang_tidy --paths torch/csrc/fx --parallel
```
Reviewed By: walterddr, janeyx99
Differential Revision: D29568582
Pulled By: 1ntEgr8
fbshipit-source-id: cd6d11c5cb8ba9f1344a87c35647a1cd8dd45b04
