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

js/js.translator/testData/box/callableReference/property/memberProperty.kt

@@ -0,0 +1,31 @@
+package foo
+
+open class A(var msg:String) {
+    open var prop:String = "initA"
+}
+
+class B:A("FromB") {
+    override var prop:String = "initB"
+}
+
+fun box(): String {
+    var refAProp = A::prop
+    var refBProp = B::prop
+
+    assertEquals("prop", refAProp.name)
+    assertEquals("prop", refBProp.name)
+
+    val a = A("Test")
+    assertEquals("initA", refAProp.get(a))
+
+    refAProp.set(a, "newPropA")
+    assertEquals("newPropA", a.prop)
+
+    val a1 = B()
+    assertEquals("initB", refAProp.get(a1))
+
+    refAProp.set(a1, "newPropB")
+    assertEquals("newPropB", a1.prop)
+
+    return "OK"
+}