feat(localization): added zh_TW (#2913)

* feat(localization): added zh_TW

* fixed based on @coderabbitai

* updated false translation for zh_TW

* new workflow

* revert

* fixed a lot of translations

* turned most zh to zh-CN

* fallbacklang

* bruh

* eliminate ALL _

* fix: paths and other miscs thanks @Calcium-Ion

* fixed translation and temp fix for preferencessettings.js

* fixed translation error

* fixed issue about legacy support

* reverted stupid coderabbit's suggestion

controller/model_sync.go

@@ -29,7 +29,7 @@ const (
 func normalizeLocale(locale string) (string, bool) {
 	l := strings.ToLower(strings.TrimSpace(locale))
 	switch l {
-	case "en", "zh", "ja":
+	case "en", "zh-CN", "zh-TW", "ja":
 		return l, true
 	default:
 		return "", false