JS: Add trap test for import assertions

Author: asgerf

javascript/extractor/tests/esnext/input/import-assertion.js

@@ -0,0 +1,13 @@
+import "module" assert { type: "json" };
+import * as v1 from "module" assert { type: "json" };
+import { v2 } from "module" assert { type: "json" };
+import v3 from "module" assert { type: "json" };
+
+export { v4 } from "module" assert { type: "json" };
+export * from "module" assert { type: "json" };
+export * as v5 from "module" assert { type: "json" };
+
+const v6 = import("module", { assert: { type: "json" } });
+
+import "module" // missing semicolon
+assert({type: "json"}); // function call, not import assertion