Implement warning when non-abstract classes containing abstract members invisible from that classes

#KT-27825 fixed

compiler/testData/diagnostics/tests/visibility/abstractInvisibleMemberFromKotlinWarning.kt

@@ -0,0 +1,22 @@
+// !LANGUAGE: -ProhibitInvisibleAbstractMethodsInSuperclasses
+// MODULE: base
+// FILE: Base.kt
+package base
+
+abstract class Base {
+    fun foo(): String {
+        return internalFoo()
+    }
+    internal abstract fun internalFoo(): String
+}
+
+// MODULE: impl(base)
+// FILE: Impl.kt
+package impl
+import base.*
+
+<!INVISIBLE_ABSTRACT_MEMBER_FROM_SUPER_WARNING!>class Impl<!> : Base()
+
+fun foo() {
+    Impl().foo()
+}