[MM-14058] Add support for i18n (#2190)

* Add language files

* Add react-intl, mmjstool, setup for adding translations

* Translated main module

* Translations for renderer

* A few minor fixes

* More fixes

* Add CI, add missing menu translations, other cleanup

* Added setting to manually select the language of the app

* Force English for E2e

* Unit tests

* Fix mmjstool

* Move set language to before update menu

* PR feedback

src/main/AutoLauncher.ts

@@ -22,7 +22,7 @@ export class AutoLauncher {
             return;
         }
         const appLauncher = new AutoLaunch({
-            name: 'Mattermost',
+            name: app.name,
         });
         const enabled = await appLauncher.isEnabled();
         if (enabled) {