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

js/js.translator/testData/box/inheritance/baseCall.kt

@@ -0,0 +1,14 @@
+package foo
+
+open class A(val name: String)
+
+class B(val age: Int, name: String) : A(name)
+
+fun box(): String {
+    val b = B(12, "Mike")
+
+    if (b.age != 12) return "b.age != 12, it: ${b.age}"
+    if (b.name != "Mike") return "b.name != 'Mike', it: ${b.name}"
+
+    return "OK"
+}