add save_profiling_data option

[avivajpeyi]

Describe your changes

Add an option to save profiling data (as a CSV) after notebook execution. Requires profile_memory and/or profile_runtime to be enabled.

Issue ticket number and link

Closes #52

Checklist before requesting a review

• [x] I have performed a self-review of my code
• [x] I have added thorough tests (when necessary).
• [x] I have added the right documentation in the docstring and changelog (when needed)

---

:books: Documentation preview :books:: https://ploomber-engine--55.org.readthedocs.build/en/55/

[edublancas]

alright so almost all check passed, except the docs building. this is probably due to some external cause. I've fixed this in the main branch already, please rebase from main so you get the fix and push again

[edublancas]

this needs a rebase since I merged the new cwd parameter

[edublancas]

wohoo 🎉 I'll make a release as soon as the CI in the main branch passes