feat: add DynamicCategorize #918 (#1273)

### What problem does this PR solve?

feat: add DynamicCategorize #918

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/flow/categorize-form/hooks.ts

@@ -0,0 +1,13 @@
+import { Operator } from '../constant';
+import useGraphStore from '../store';
+
+// exclude some nodes downstream of the classification node
+const excludedNodes = [Operator.Categorize, Operator.Answer, Operator.Begin];
+
+export const useBuildCategorizeToOptions = () => {
+  const nodes = useGraphStore((state) => state.nodes);
+
+  return nodes
+    .filter((x) => excludedNodes.every((y) => y !== x.data.label))
+    .map((x) => ({ label: x.id, value: x.id }));
+};