* feat: use `Inserter` as Frontend
* fix: enable procedure in flownode
* docs: remove `frontend_addr` opts
* chore: rm fe addr in test runner
* refactor: int test also use inserter invoker
* feat: flow shutdown&refactor: remove `Frontendinvoker`
* refactor: rename `RemoteFrontendInvoker` to `FrontendInvoker`
* refactor: per review
* refactor: remove a layer of box
* fix: standalone use `node_manager`
* fix: remove a `Arc` cycle