add immutable presentAs method to Dish for node REPL display. add test for exact match help

tests/operations/Dish.mjs

@@ -0,0 +1,12 @@
+import TestRegister from "../../lib/TestRegister";
+import Dish from "../../src/core/Dish";
+import it from "../node/assertionHandler";
+import assert from "assert";
+
+TestRegister.addApiTests([
+    it("Dish - presentAs: should exist", () => {
+        const dish = new Dish();
+        assert(dish.presentAs);
+    }),
+
+]);