delete guileslop and add haskellslop

examples/wat/addcomponent/adder.wit

@@ -0,0 +1,9 @@
+package demo:addcomponent@0.1.0;
+
+interface adder {
+          add: func (a: u32, b: u32) -> u32;
+}
+
+world example {
+      export adder;
+}