Select also raw button press/release in XInput2 based polling

Summary:
The mouse polling is also used to detect mouse button press/release
events. This is used e.g. by the MouseClickEffect. The XInput2 filter
only selected for Raw Motion events which means mouse button events
are missed in case it's not combined with a motion.

This change makes the input filter also select for raw button press
and release events. To support this the X11EventFilter needed to
be adjusted to support multiple generic event types to filter for.

BUG: 366612
FIXED-IN: 5.7.4

Reviewers: KWin, Plasma

Subscribers: kwin

Tags: KWin

Differential Revision: https://phabricator.kde.org/D2406