Integrate LlamaIndex in finesse-frontend

[k-allagbe]

In finesse-frontend, we are adding LlamaIndex as a new search source. This will involve integrating it into the debug panel for source selection and implementing backend calls for retrieving search results.

We should also take this opportunity to remove the simulated source.

Tasks

• [ ] Remove the simulated option from the debug panel.
• [ ] Include LlamaIndex in the debug panel for source selection.
• [ ] Conduct thorough testing to ensure accurate retrieval and integration of search results from LlamaIndex.
• [ ] Update project documentation to reflect the addition and usage of LlamaIndex.

Acceptance Criteria

• The simulated source is no longer available.
• The system correctly fetches and displays search results from LlamaIndex without significant performance issues.
• The debug panel UI clearly shows LlamaIndex as an available search source.
• Documentation is updated to include details on LlamaIndex integration and usage.

[nmeraihi]

I suggest that we keep only two options for now;

• [x] Use Azure AI searche (activated by default)
• [ ] LlamaIndex (deactivated until we fix the results)

[k-allagbe]

I suggest that we keep only two options for now;

* [x]  Use Azure AI searche (activated by default)

* [ ]  LlamaIndex (deactivated until we fix the results)

I changed the description to reflect that.

[k-allagbe]

I suggest that we keep only two options for now;

* [x]  Use Azure AI searche (activated by default)

* [ ]  LlamaIndex (deactivated until we fix the results)

@rngadam fixed ai-cfia/ailab-db#38. Should we still remove it from the debug panel?

[nmeraihi]

oui parfait!