feat(constructobservablemarble): define interfaces

Author: kwonoj

src/assert/constructObservableMarble.ts

@@ -0,0 +1,7 @@
+import { TestMessage } from '../message/TestMessage';
+
+const constructObservableMarble = (_value: Array<TestMessage>) => {
+  //noop
+};
+
+export { constructObservableMarble };