Move translations to a separate package

Makes it easier to find non-language files as necessary

plugin/src/main/java/com/lishid/openinv/util/LanguageManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2021 lishid. All rights reserved.
+ * Copyright (C) 2011-2022 lishid. All rights reserved.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -56,7 +56,7 @@ public class LanguageManager {
 			return loaded;
 		}
 
-		InputStream resourceStream = plugin.getResource(locale + ".yml");
+		InputStream resourceStream = plugin.getResource("locale/" + locale + ".yml");
 		YamlConfiguration localeConfigDefaults;
 		if (resourceStream == null) {
 			localeConfigDefaults = new YamlConfiguration();