delete guileslop and add haskellslop

examples/wat/hello/hello.wit

@@ -0,0 +1,49 @@
+package root:component;
+
+world root {
+  import wasi:cli/stdin@0.2.6;
+  import wasi:cli/stdout@0.2.6;
+  import wasi:io/streams@0.2.6;
+
+  export wasi:cli/run@0.2.6;
+}
+
+package wasi:cli@0.2.6 {
+  interface stdout {
+    use wasi:io/streams@0.2.6.{output-stream};
+
+    get-stdout: func() -> output-stream;
+  }
+  interface stdin {
+  }
+  interface run {
+    run: func () -> result;
+  }
+}
+
+package wasi:io@0.2.6 {
+  interface poll {
+    resource pollable {
+      block: func();
+    }
+  }
+  interface error {
+    resource error;
+  }
+  interface streams {
+    use error.{error};
+    use poll.{pollable};
+
+    resource input-stream;
+
+    resource output-stream {
+      write: func(contents: list<u8>) -> result<_, stream-error>;
+      blocking-write-and-flush: func(contents: list<u8>) ->result<_,stream-error>;
+    }
+
+    variant stream-error {
+      last-operation-failed(error),
+      closed,
+    }
+  }
+}