start a new ruby layer to do the to_vool conversion

the "normalization" is getting more and more complicated and is not tested
And it seems i really don't like working with the untyped ast

test/ruby/test_class_statement.rb

@@ -0,0 +1,44 @@
+require_relative "helper"
+
+module Ruby
+  class TestEmptyClassStatementX < MiniTest::Test
+    include RubyTests
+
+    def setup
+      input = "class Tryout < Base;end"
+      @lst = compile( input )
+    end
+
+    def test_compile_class
+      assert_equal ClassStatement , @lst.class
+    end
+
+    def test_compile_class_name
+      assert_equal :Tryout , @lst.name
+    end
+
+    def test_compile_class_super
+      assert_equal :Base , @lst.super_class_name
+    end
+
+    def test_compile_class_body
+      assert @lst.body.empty?
+    end
+
+  end
+  class TestBasicClassStatementX < MiniTest::Test
+    include ScopeHelper
+    include RubyTests
+
+    def test_compile_one_method
+      lst = compile( as_test_main("@ivar = 4") )
+      assert_equal IvarAssignment , lst.body.first.body.class
+    end
+    def test_compile_two_stats
+      lst = compile( as_test_main("false; true;") )
+      assert_equal ScopeStatement , lst.body.first.body.class
+      assert_equal TrueConstant , lst.body.first.body.statements[1].class
+    end
+
+  end
+end