Task Description (Required)

Currently the Lightspeed Plugin backend is only able to handle a single MCP tool as we just needed integration with the MCP tool from RHDH.

However, we should update the Lightspeed Backend code to accept multiple mcp tokens and send request to lightspeed-stack.

The lightspeed-stack accepts multiple MCP HEADERS https://github.com/lightspeed-core/lightspeed-stack?tab=readme-ov-file#configuring-mcp-headers

So lets update the Lightspeed plugin backend to update it as well https://github.com/redhat-developer/rhdh-plugins/blob/94b43f2b20f3b80a2c3338659d8fac70f40b667f/workspaces/lightspeed/plugins/lightspeed-backend/src/service/router.ts#L58