JS: create new common directory for all generated tests, migrate several tests there

js/js.translator/testData/box/enum/superCallInEnumLiteral.kt

@@ -0,0 +1,18 @@
+package foo
+
+fun box() = E.E1.f() + E.E2.f()
+
+enum class E {
+    E1 {
+        override fun f(): String {
+            return super<E>.f() + "O"
+        }
+    },
+    E2 {
+        override fun f(): String {
+            return super.f() + "K"
+        }
+    };
+
+    open fun f() = ""
+}