Provide human readable title and description for specific route configurations

As a Developer I want to know what APIs are available through our API Gateway so that I can leverage them to provide solutions for customer problems

Today there is an actuator endpoint at /actuator/gateway/routes that provides a JSON response with all routes configured on the Gateway. The properties that are included in this response are specific to the route configuration. This enhancement would be to add properties at the top level for each route to provide human readable information to potential consumers of each API route. Here are my suggestions for these properties:

• title - human readable name for the route (goes alongside current property route_id)
• description - one to two paragraphs that describe the intended use case for the route
• documentation - and array of links to more documentation and examples of using that API

Start from the /actuator/gateway/routes endpoint and the route configuration model that supplies its response. Determine where route-level metadata can be represented and exposed, then verify that each route can return title, description, and documentation links alongside route_id. Add or update tests for the endpoint response and its configured metadata.