delete guileslop and add haskellslop

examples/wat/providecomponent/importing.wit

@@ -0,0 +1,15 @@
+package demo:importing@0.1.0;
+
+interface provider {
+          get: func () -> u32;
+}
+
+interface adder {
+          add: func (other: u32) -> u32;
+          mul: func (other: u32) -> u32;
+}
+
+world example {
+import provider;
+export adder;
+}