JS backend: added jsCode test cases

js/js.translator/testData/jsCode/cases/invocation.kt

@@ -0,0 +1,9 @@
+package foo
+
+fun run<A, B, C>(a: A, b: B, func: (A, B) -> C): C = js("func(a, b)")
+
+fun box(): String {
+    assertEquals(3, run(1, 2) {(a, b) -> a + b})
+
+    return "OK"
+}