For various reasons, it might be interesting for a user to request the deletion/rebuild of a proxy clip from the bin. We should add a submenu entry, visible only when the clip is proxied, that allows to overwrite the existing proxy, by calling something like this in projectclip.cpp:

if (hasProxy()) {

pCore->jobManager()->discardJobs(clipId(), AbstractClipJob::PROXYJOB);        
setProducerProperty(QStringLiteral("_overwriteproxy"), 1);
pCore->jobManager()->startJob<ProxyJob>({clipId()}, -1, QString());

}