Bug 1901986 - set MOZ_APP_VENDOR and MOZ_APP_ID value for iOS r=glandium

Differential Revision: https://phabricator.services.mozilla.com/D213525

mobile/ios/confvars.sh

@@ -0,0 +1,6 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+MOZ_APP_VENDOR=Mozilla
+MOZ_APP_ID={8e3ba928-3798-4bcd-9b64-c788f2d954d3}