chore: setup monorepo using preconstruct

packages/core/src/components/Edges/StepEdge.tsx

@@ -0,0 +1,8 @@
+import React, { memo } from 'react';
+
+import { EdgeSmoothStepProps } from '../../types';
+import SmoothStepEdge from './SmoothStepEdge';
+
+export default memo((props: EdgeSmoothStepProps) => {
+  return <SmoothStepEdge {...props} borderRadius={0} />;
+});