DOC: Upload cheatsheets to site
- [x] closes #40949
- [x] tests added / passed
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#pre-commit) for how to run them
- [ ] whatsnew entry


I went ahead and modified the `.github/workflows/ci.yml` so that the cheatsheets are copied to the docs build directory once the Sphinx site is built