feat: introduce custom edges, auto layout improvements and node data updates

packages/web/src/components/EditorNew/InvisibleNode/InvisibleNode.jsx

@@ -0,0 +1,30 @@
+import { Handle, Position } from 'reactflow';
+import { Box } from '@mui/material';
+
+// This node is used for adding an edge with add node button after the last flow step node
+function InvisibleNode() {
+  return (
+    <Box
+      maxWidth={900}
+      width="100vw"
+      className="nodrag"
+      sx={{ visibility: 'hidden' }}
+    >
+      <Handle
+        type="target"
+        position={Position.Top}
+        isConnectable={false}
+        style={{ visibility: 'hidden' }}
+      />
+      Invisible node
+      <Handle
+        type="source"
+        position={Position.Bottom}
+        isConnectable={false}
+        style={{ visibility: 'hidden' }}
+      />
+    </Box>
+  );
+}
+
+export default InvisibleNode;