[Do not merge] Demonstration of adding non-search related tools to RAG flow

[pamelafox]

Purpose

This PR builds on https://github.com/Azure-Samples/azure-search-openai-demo/pull/2738/files
to show how to add a non-search related tool, to lookup the weather.

In this case, we are only calling a single tool at a time. If you wanted an agentic tool calling loop or a sequential tool-calling sequence, that requires slightly different code.

Does this introduce a breaking change?

When developers merge from main and run the server, azd up, or azd deploy, will this produce an error?
If you're not sure, try it out on an old environment.

[X] Yes
[ ] No

Does this require changes to learn.microsoft.com docs?

This repository is referenced by this tutorial
which includes deployment, settings and usage instructions. If text or screenshot need to change in the tutorial,
check the box below and notify the tutorial author. A Microsoft employee can do this for you if you're an external contributor.

[ ] Yes
[X] No

Type of change

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[X] Other... Please describe:

Code quality checklist

See CONTRIBUTING.md for more details.

N/A