feat(edge-labels): add div based renderer

packages/core/src/components/EdgeLabelRenderer/index.tsx

@@ -0,0 +1,15 @@
+import { useRef } from 'react';
+import type { ReactNode } from 'react';
+import { createPortal } from 'react-dom';
+
+function EdgeLabelRenderer({ children }: { children: ReactNode }) {
+  const wrapperRef = useRef(document.getElementById('edgelabel-portal'));
+
+  if (!wrapperRef.current) {
+    return null;
+  }
+
+  return createPortal(children, wrapperRef.current);
+}
+
+export default EdgeLabelRenderer;