Add is_global_validator on user me endpoint

Author: susilnem

api/serializers.py

@@ -1733,6 +1733,7 @@ class UserMeSerializer(UserSerializer):
     is_per_admin_for_countries = serializers.SerializerMethodField()
     user_countries_regions = serializers.SerializerMethodField()
     limit_access_to_guest = serializers.BooleanField(read_only=True, source="profile.limit_access_to_guest")
+    is_global_validator = serializers.SerializerMethodField()
 
     class Meta:
         model = User
@@ -1745,6 +1746,7 @@ class Meta:
             "is_per_admin_for_countries",
             "user_countries_regions",
             "limit_access_to_guest",
+            "is_global_validator",
         )
 
     @staticmethod
@@ -1808,6 +1810,10 @@ def get_user_countries_regions(user):
         qs = UserCountry.objects.filter(user=user).distinct("country")
         return UserCountrySerializer(qs, many=True).data
 
+    @staticmethod
+    def get_is_global_validator(user) -> bool:
+        return Permission.objects.filter(codename="local_unit_global_validator", group__user=user).exists()
+
 
 class ActionSerializer(ModelSerializer):
     class Meta: