add contributing to PyMC

[SangamSwadiK]

Description: What does this implement/fix? Explain your changes.

Adds contributing to PyMC ## Reference: Issue or Pull Request (PR) - [x] Towards #87 ## Reminders - [x] Did you review the [CONTRIBUTING GUIDE](https://github.com/data-umbrella/data-umbrella-website/blob/main/CONTRIBUTING.md)? - [x] Did you reference an issue or another pull request? #### Any other comments? None

[netlify[bot]]

✅ Deploy Preview for majestic-souffle-d006f2 ready!

Name	Link
🔨 Latest commit	f8e780a3f971b6c332c403545597ef577f5f0d53
🔍 Latest deploy log	https://app.netlify.com/sites/majestic-souffle-d006f2/deploys/641c493e98457c000806d1c7
😎 Deploy Preview	https://deploy-preview-122--majestic-souffle-d006f2.netlify.app/open-source/contributing-to-pymc
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[SangamSwadiK]

I modified the order so its all aligned. I think the alignment wont be achieved as in the original order in Issue because some of the videos have longer titles.

[reshamas]

@SangamSwadiK Thanks for this PR. a) I think for filters, we should use:

• contributing (video)
• using-pymc (pymc-resource)

b) For ArviZ thumbnail, we can use this one as a start (may need resizing): https://www.canva.com/design/DAFTXBr6mxg/9QnMuzbCHObGl049DcdJpg/edit?utm_content=DAFTXBr6mxg&utm_campaign=designshare&utm_medium=link2&utm_source=sharebutton

c) For "Contributing to PyMC Documentation", let's start with this thumbnail: https://www.canva.com/design/DAE6rZJAdA0/GB-izEd0N7fTbbCWZ6gIrA/edit?utm_content=DAE6rZJAdA0&utm_campaign=designshare&utm_medium=link2&utm_source=sharebutton

c) In the navigation bar, I would move "Contributing to PyMC" above the "core python" one.

d) Can we update this title to "PyMC" and not "PyMC3" (remove ref to version 3): Intuitive Bayesian modeling with PyMC3

e) The current links in the 3rd row point to the YouTube video. I think we can point them to:

• Intuitive Bayesian Modeling with PyMC: https://pymc-data-umbrella.xyz/en/latest/about/intuitive_modeling/index.html
• etc.

[reshamas]

Thank you @SangamSwadiK. Nice to have the PyMC resources on one page! I think people will find it useful.