add simplifed chinese locale (#485)

* add chinese locale, but translation is not yet complete.

* Add chs and cht locale

* translate ability,move,pokeball,pokemon

* Add files via upload

* Add files via upload

* Update i18n.ts

* Delete src/locales/zh_cn directory

* Add files via upload

* Update settings.ts

* Delete src/locales/chs directory

* Add files via upload

* add tutorial

* fix conflict issue

* remove cht, due to chs is almost done by justhil

* remove duplicated setting

* spell correction

---------

Co-authored-by: ZXZhuang <2993968012@qq.com>
Co-authored-by: justhil <138752349+justhil@users.noreply.github.com>
Co-authored-by: Jianfeng 2. Wang (NSB) <jianfeng.2.wang@nokia-sbell.com>

src/system/settings.ts

@@ -198,6 +198,10 @@ export function setSetting(scene: BattleScene, setting: Setting, value: integer)
                 label: 'Deutsch',
                 handler: () => changeLocaleHandler('de')
               },
+              {
+                label: 'Simplified  Chinese',
+                handler: () => changeLocaleHandler('chs')
+              },
               {
                 label: 'Cancel',
                 handler: () => cancelHandler()