[DOC]: Update Contributing Guide/CI Overview to include information about pre-commit

[jrhemstad]

Is this a duplicate?

• I confirmed there appear to be no duplicate issues for this bug and that I agree to the Code of Conduct

Is this for new documentation, or an update to existing docs?

New

Describe the incorrect/future/missing documentation

As a contributor to CCCL, I'd like to know whatever it is I need to know to ensure my contributions are formatted correctly and will pass the CI format check.

### Tasks
- [ ] Add "Pre-Commit Linters" section to contributing guide with top-level overview of precommit and subsection for clang-format
- [ ] Update CI Overview to add section about pre-commit.ci 

The desired outcome is that if the pre-commit.ci job fails, people should have somewhere to go to tell them how to fix it. This should include:

• Information about how to run formatting locally (whether with VSCode or pre-commit directly)
• Information about how to use the pre-commit.ci autofix comment on a PR to automatically apply pre-commit linters

If this is a correction, please provide a link to the incorrect documentation. If this is a new documentation request, please link to where you have looked.

No response

[bdice]

I opened #1627 with an attempt at this documentation. I copied a lot of it from cuDF.