feat(attribution): add react flow attribution

src/components/Attribution/index.tsx

@@ -0,0 +1,30 @@
+import React from 'react';
+import cc from 'classcat';
+
+import { AttributionPosition, ProOptions } from '../../types';
+
+type AttributionProps = {
+  pro?: ProOptions;
+  position?: AttributionPosition;
+};
+
+function Attribution({ pro, position = 'bottom-right' }: AttributionProps) {
+  if (pro?.account === 'paid-subscription' && pro?.hideAttribution) {
+    return null;
+  }
+
+  const positionClasses = `${position}`.split('-');
+
+  return (
+    <div
+      className={cc(['react-flow__attribution', ...positionClasses])}
+      data-message="Please only hide this attribution when you have a pro account: reactflow.dev/pro"
+    >
+      <a href="https://reactflow.dev" target="_blank" rel="noopener noreferrer">
+        React Flow
+      </a>
+    </div>
+  );
+}
+
+export default Attribution;