Issue #182 Support interfaces in Java and PHP

[mikehaertl]

Fixes #182

@danymat This is just a stupid copy & paste work - so let me know if I missed something obvious.

If the change is fine it could probably also be added to other languages. Or is there any reason why interfaces should not be documented?

[danymat]

Hello, can you make an example of interface before -> after the annotation ? Btw, thanks for your help :)

[mikehaertl]

Before:

package com.example;

import java.util.UUID;
import lombok.NonNull;

public interface Entity {
    @NonNull UUID getId();
}

After:

package com.example;

import java.util.UUID;
import lombok.NonNull;

/**
 * [TODO:description]
 *
 */
public interface Entity {
    @NonNull UUID getId();
}

[mikehaertl]

@danymat Is there anything I can do to resolve the problems in this branch? My changes where actually quite small, so not sure why tests ar failing now.

[danymat]

Hello, tests failing are not related to you, but a bug (same as the one in lua tests) that I need to investigate and understand..
I'm merging this PR rn :)

Thanks for the PR!