ui/key: rename ChordEvent to just Event

Event is like pointer.Event and we don't want the stuttering of
key.KeyEvent.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

ui/app/os_macos.go

@@ -127,7 +127,7 @@ func gio_onKeys(view C.CFTypeRef, cstr *C.char, ti C.double, mods C.NSUInteger)
 		w := views[view]
 		for _, k := range str {
 			if n, ok := convertKey(k); ok {
-				w.w.event(key.ChordEvent{Name: n, Modifiers: kmods})
+				w.w.event(key.Event{Name: n, Modifiers: kmods})
 			}
 		}
 	})