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

js/js.translator/testData/box/closure/closureReceiverInLocalExtFunByLocalExtFun.kt

@@ -0,0 +1,26 @@
+package foo
+
+// workaround for Rhino
+var n = 0
+class A {
+    val i = ++n
+}
+
+fun box(): String {
+
+    fun A.foo() {
+        fun A.bar() {
+            assertEquals(2, this.i, "check this.i in A.bar()")
+            assertEquals(1, this@foo.i, "check this@foo.i in A.bar()")
+        }
+        val b = { assertEquals(1, this.i, "check this.i in b") }
+
+        assertEquals(1, this.i, "check this.i in A.foo()")
+        A().bar()
+        b()
+    }
+
+    A().foo()
+
+    return "OK"
+}