Feature Request: Add index page for conformity with Spring Boot Actuator

[Idane]

Would it be possible to output available endpoints when accessing the middleware's root? For example, in Spring Boot's Actuator going to /actuator will return the following result:

{
    "_links": {
        "self": {
            "href": "http://example.com/actuator",
            "templated": false
        },
        "health": {
            "href": "http://example.com/actuator/health",
            "templated": false
        },
        "info": {
            "href": "http://example.com/actuator/info",
            "templated": false
        },
        ...
    }
}