Less restrictive install permission requests (#488)

lib/providers/settings_provider.dart

@@ -120,7 +120,7 @@ class SettingsProvider with ChangeNotifier {
     return result;
   }
 
-  Future<void> getInstallPermission() async {
+  Future<void> getInstallPermission({bool enforce = false}) async {
     while (!(await Permission.requestInstallPackages.isGranted)) {
       // Explicit request as InstallPlugin request sometimes bugged
       Fluttertoast.showToast(
@@ -129,6 +129,9 @@ class SettingsProvider with ChangeNotifier {
           PermissionStatus.granted) {
         break;
       }
+      if (!enforce) {
+        break;
+      }
     }
   }