docs: add example for microsoft onelake iceberg rest catalog

[NNSatyaKarthik]

Rationale for this change

Adding a configuration for Microsoft Fabric OneLake catalog in Common Integrations & Examples

Are these changes tested?

Not needed - only documentation change.

Are there any user-facing changes?

Yes - only documentation chnages.

[kevinjqliu]

Thanks for adding the example to the docs, I added a few comments.

Could you also include a screenshot of the change using make docs-serve?

[NNSatyaKarthik]

Thanks for adding the example to the docs, I added a few comments.

Could you also include a screenshot of the change using make docs-serve?

Command executed:

uv run mkdocs serve -f mkdocs/mkdocs.yml

[kevinjqliu]

LGTM!