The detector emits tracker_resource entries (scripts, iframes, images,
beacons, fonts, fetches, media, service workers); the "third-party"
qualifier was misleading because the same code path also fires for
service workers, which are always same-origin per browser security
rules. Rename the class and file to match what they actually produce.
Signed-off-by: Émile Ré <emile@getprobo.com>