Code writing with a function call notebook created

[GregorD1A1]

@ekzhu

Why are these changes needed?

Added notebook that shows an example of using function calls instead of code executor for creating advanced software apps.

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 35.57%. Comparing base (4a44093) to head (9bc013b).
Report is 19 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2121      +/-   ##
==========================================
- Coverage   38.14%   35.57%   -2.57%     
==========================================
  Files          78       79       +1     
  Lines        7865     8089     +224     
  Branches     1683     1727      +44     
==========================================
- Hits         3000     2878     -122     
- Misses       4615     4967     +352     
+ Partials      250      244       -6     

Flag	Coverage Δ
unittests	35.57% <ø> (-2.56%)	⬇️

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[GregorD1A1]

@ekzhu code formatting improved.

[ekzhu]

@GregorD1A1 thanks also please add the metadata field in the notebook.

[GregorD1A1]

@ekzhu I'm not familiar with concept of metadata. There is some "metadata" field in lines 926-944. Do you meant that or something different?

[ekzhu]

I forgot the submit this review. See the comment for what I meant about adding metadata field.

[ekzhu]

Thanks! Could you also include the new notebook in the PR?

You can see how to make the notebook show up on the website by following instructions here: https://microsoft.github.io/autogen/docs/contributor-guide/documentation#how-to-get-a-notebook-rendered-on-the-website

[GregorD1A1]

Oh, it dessapeared. Copied notebook to the directory again and repaired formatting.

[ekzhu]

@GregorD1A1 there is still some issue with the notebook. I created a PR to fix it. Please review: #2403