Define Caps lock as a modifier

The previous implementation has unintended interactions with
auto-capitalisation.

Caps lock can now be locked twice at the same time, independently:
- Long press on shift
- Tap on Caps lock

Both have to be disabled independently. This might seem weird.

srcs/juloo.keyboard2/KeyValue.java

@@ -355,6 +355,7 @@ public static KeyValue getKeyByName(String name)
       case "box": return modifierKey("Box", Modifier.BOX, 0);
       case "fn": return modifierKey("Fn", Modifier.FN, 0);
       case "meta": return modifierKey("Meta", Modifier.META, 0);
+      case "capslock": return modifierKey(0xE012, Modifier.SHIFT, FLAG_LOCKED);
 
       /* Special event keys */
       case "config": return eventKey(0xE004, Event.CONFIG, FLAG_SMALLER_FONT);
@@ -368,7 +369,6 @@ public static KeyValue getKeyByName(String name)
       case "change_method": return eventKey(0xE009, Event.CHANGE_METHOD_PICKER, FLAG_SMALLER_FONT);
       case "change_method_prev": return eventKey(0xE009, Event.CHANGE_METHOD_AUTO, FLAG_SMALLER_FONT);
       case "action": return eventKey("Action", Event.ACTION, FLAG_SMALLER_FONT); // Will always be replaced
-      case "capslock": return eventKey(0xE012, Event.CAPS_LOCK, 0);
       case "voice_typing": return eventKey(0xE015, Event.SWITCH_VOICE_TYPING, FLAG_SMALLER_FONT);
       case "voice_typing_chooser": return eventKey(0xE015, Event.SWITCH_VOICE_TYPING_CHOOSER, FLAG_SMALLER_FONT);