Currently, i3 only logs FocusIn events. Thus, a debug log tells us when
some window gets the focus. However, we don't know when it loses the
focus. This commit remedies this by adding some log messages for this.
Since I had no idea what to log, this just logs all the fields from the
event plus tries to find a name for the window.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Idea-in-context-of: https://github.com/i3/i3/issues/4532