Add a bulk edit/update endpoint to the MCP

[leon-zc]

Right now if you want to update the category for 80 places on your map, the AI needs to make 80 tool calls, this results in you needing to wait on your AI while you just wanted to do some quick edits. Adding this would greatly improve the workflow of using AI to plan and manage your trip!

[mauriceboe]

Done! 🎉 Added a bulk_update_places MCP tool that does exactly this — apply the same change (category, price, transport mode, …) to a whole batch of places in one call instead of one update per place. So "re-categorise these 80 places" is now a single tool call.

Landing in v3.2.0 (#1376). Thanks for the suggestion, @leon-zc — nice workflow win. 🙌