Support Overpass API JSON format

[Don-vip]

There is some discussion about adding ​JSON format output for the OSM API.

It may be possible that the format ​matches Overpass API JSON.

We should start by supporting this format. Currently we force XML output in OverpassDownloadReader:

    /**
     * Fixes Overpass API query to make sure it will be accepted by JOSM.
     * @param query Overpass query to check
     * @return fixed query
     * @since 13335
     */
    public static String fixQuery(String query) {
        return query == null ? query : query
                .replaceAll("out( body| skel| ids)?( id| qt)?;", "out meta$2;")
                .replaceAll("(?s)\\[out:(json|csv)[^\\]]*\\]", "[out:xml]");
    }

[Don-vip]

In 14086/josm:

fix #16546 - Support Overpass API JSON format

[Don-vip]

In 14087/josm:

see #16546 - fix error-prone violation

[Don-vip]

In 14088/josm:

see #16546 - simplify exception chaining to keep existing unit tests as it

[Don-vip]

In 14090/josm:

see #16546 - fix unit test