[UTest] Add tag [core][catalog][schema] for TEST_CASE("Table empty access")

- Add this tag to make it run as part of CI

Author: ihanwen99

unittest/catalog/SchemaTest.cpp

@@ -30,7 +30,7 @@ TEST_CASE("Table c'tor", "[core][catalog][schema]")
     CHECK(r.num_attrs() == 0);
 }
 
-TEST_CASE("Table empty access")
+TEST_CASE("Table empty access", "[core][catalog][schema]")
 {
     Table r("mytable");