Analysis: add LC testdata with current behaviour

compiler/testData/asJava/ultraLightClasses/enums.lib.java

@@ -0,0 +1,16 @@
+public abstract enum ProtocolState /* ProtocolState*/ {
+  WAITING,
+  TALKING;
+
+  @org.jetbrains.annotations.NotNull()
+  public abstract ProtocolState signal();//  signal()
+
+  private  ProtocolState();//  .ctor()
+
+
+
+  class TALKING ...
+
+    class WAITING ...
+
+  }