style: gofumpt all the things (#9829)

Literally `gofumpt -w .` from the top level dir. Guaranteed to be minor
style changes only and nothing else.

@imsodin per request?

lib/events/events_test.go

@@ -81,7 +81,6 @@ func TestEventAfterSubscribe(t *testing.T) {
 	l.Log(DeviceConnected, "foo")
 
 	ev, err := s.Poll(timeout)
-
 	if err != nil {
 		t.Fatal("Unexpected error:", err)
 	}