Monday — add List Boards action

[s0s0physm]

Is there a specific app this action is for?
Monday

Please provide a link to the relevant API docs for the specific service / operation.
https://developer.monday.com/api-reference/reference/boards

Problem

There is no standalone action to list Monday boards. The boardId prop is accessible via retrieve_options within existing actions, but agents have no dedicated tool to list boards directly.

What's needed

A standalone List Boards action that queries the Monday GraphQL API for boards and returns board IDs and names.

Notes

• boardId prop calls this.listBoardsOptions() → GraphQL boards query
• The listBoards method already exists in monday.app.mjs and can be reused

[PIPE-63]