feat(edges): add arrow head options

src/components/Edges/utils.ts

@@ -0,0 +1,9 @@
+import { ArrowHeadType } from '../../types';
+
+export const getMarkerEnd = (arrowHeadType?: ArrowHeadType, markerEndId?: string): string => {
+  if (typeof markerEndId !== 'undefined' && markerEndId) {
+    return `url(#${markerEndId})`;
+  }
+
+  return typeof arrowHeadType !== 'undefined' ? `url(#react-flow__${arrowHeadType})` : 'none';
+};