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/helper.rb

@@ -0,0 +1,17 @@
+require_relative "../helper"
+
+module Ruby
+  module RubyTests
+    def setup
+      Parfait.boot!
+    end
+    def compile(input)
+      RubyCompiler.compile(input)
+    end
+
+    def ruby_to_vool(input)
+      RubyXCompiler.new(input).ruby_to_vool
+    end
+
+  end
+end