Add step-by-step tutorial for adding a new dialect

[dime10]

[sc-67082]

[github-actions[bot]]

Hello. You may have forgotten to update the changelog! Please edit doc/changelog.md on your branch with:

• A one-to-two sentence description of the change. You may include a small working example for new features.
• A link back to this PR.
• Your name (or GitHub username) in the contributors section.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.93%. Comparing base (acc19c5) to head (bb02f80). Report is 7 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #943 +/- ## ========================================== + Coverage 97.92% 97.93% +0.01% ========================================== Files 71 72 +1 Lines 10255 10317 +62 Branches 1163 1176 +13 ========================================== + Hits 10042 10104 +62 Misses 169 169 Partials 44 44 ```

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