Lambda / template eventfilter support

bool QObject::installEventFilter(std::function<bool (QEvent *)> filter)
bool QObject::installEventFilter(QObject *context, std::function<bool (QEvent *)> filter)

// Templated
template<typename T>
bool QObject::installEventFilter(std::function<bool (T *)> filter)
template<typename T>
bool QObject::installEventFilter(QObject *context, std::function<bool (T *)> filter)

button->installEventFilter(this, [](QEvent *event) {
    if (event->type() == QEvent::KeyPress) {
        QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
        qDebug("Ate key press %d", keyEvent->key());
        return true;
    }
    // standard event processing
    return false;
});

button->installEventFilter<QEvent::KeyPress>(this, [](auto *event) {
    qDebug("Ate key press %d", event->key());
    return true;
});