Add French support | Ajouter le support du français | 添加法语支持 (#8186)

* Add files via upload

* Add files via upload

* Update Global.cs

* Add French resource file to project

* Update ResUI.fr.resx

* Update ResUI.fr.resx

* Update ResUI.fr.resx

* Delete v2rayN/AmazTool/Resx/Resource.fr.resx

Author: xujiegb

v2rayN/ServiceLib/Global.cs

@@ -427,6 +427,7 @@ public class Global
             "zh-Hant",
             "en",
             "fa-Ir",
+            "fr",
             "ru",
             "hu"
     ];