Add emem geospatial MCP example

[kumari-jaya]

Hi LlamaIndex team,

We added a LlamaIndex example for emem, a public remote MCP server for signed geospatial facts and place-based verification.

Example:
https://github.com/Vortx-AI/emem/tree/main/examples/llamaindex

emem MCP endpoint:
https://emem.dev/mcp

MCP Registry:
io.github.Vortx-AI/emem

The example uses llama-index-tools-mcp to connect to emem and run a geospatial verification question about Helsinki Airport, Finland.

Use case: when an agent needs to answer a real-world place question, such as whether a location is low-lying or flood-prone, it can call emem for signed geospatial facts instead of relying only on web search.

Would you be open to linking this from the MCP examples/docs, or should we open a small PR adding it directly?

Links:

• emem: https://emem.dev
• GitHub: https://github.com/Vortx-AI/emem
• MCP endpoint: https://emem.dev/mcp