add rhai test

Author: makspll

assets/tests/globals/type_cache_available.rhai

@@ -0,0 +1,5 @@
+fn on_test() {
+    let my_type = types.TestResource;
+    assert(type_of(my_type) != "()", "Type TestResource is not available in type cache");
+    assert(my_type.short_name.call() == "TestResource", "Type t.TestResource:short_name() is not correct: " + my_type.short_name.call());
+}