Add Buffer component

src/sandbox/component.rs

@@ -123,3 +123,19 @@ impl From<Peg> for ComponentBuilder<'static> {
         peg.build()
     }
 }
+
+pub struct Buffer {
+    _private: (),
+}
+
+impl Buffer {
+    pub fn new() -> Self {
+        Self { _private: () }
+    }
+
+    pub fn build(self) -> ComponentBuilder<'static> {
+        ComponentBuilder::new("MHG.Buffer_WithOutput")
+            .num_inputs(1)
+            .num_outputs(1)
+    }
+}