Support more in-notebook configuration parameters

[pont-us]

Closes #33 .

[codecov]

Codecov Report

❌ Patch coverage is 90.47619% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.62%. Comparing base (677cece) to head (b1e3302).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
xcengine/core.py	90.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #34      +/-   ##
==========================================
+ Coverage   80.47%   80.62%   +0.14%     
==========================================
  Files           6        6              
  Lines         502      516      +14     
  Branches       58       61       +3     
==========================================
+ Hits          404      416      +12     
- Misses         93       94       +1     
- Partials        5        6       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.