Add pre-commit config to primary PPT project.

[delucchi-cmu]

Change Description

The PPT repo itself didn't have any pre-commit-config file. This adds the file, but removes several stages that are not relevant for this repo (checking copier template version)

Checklist

• This PR is meant for the lincc-frameworks/python-project-template repo and not a downstream one instead.
• This change is linked to an open issue
• This change includes integration testing, or is small enough to be covered by existing tests

[drewoldag]

Seems good to me. Thank you :)