some observations / enhancement request

@raymondfeng

Thanks for sharing this example.

I tried using your example code and have a few observations that I would like to share with you.

1. I think we should make "offset" a user input.
2. For the case when input "limit" is greater than the number of messages within the selected topic, the explorer is stuck in "Loading" state. I can see that it gets the messages from the backend, but since the messages are less than the requested limit, it just sits there for a timeout to occur and eventually error's out.

Please let me know your thoughts.

Based on your feedback, I am looking forward to add a few things to this example and will be happy to share an updated version with the community.

BTW I am using the latest versions of the following packages.
"@loopback/authentication": "^5.0.0",
"@loopback/authentication-jwt": "^0.5.0",
"@loopback/authorization": "^0.6.4",
"@loopback/boot": "^2.4.1",
"@loopback/core": "^2.9.3",
"@loopback/extension-health": "^0.4.11",
"@loopback/extension-metrics": "^0.3.11",
"@loopback/repository": "^2.11.0",
"@loopback/rest": "^6.0.0",
"@loopback/rest-crud": "^0.8.11",
"@loopback/rest-explorer": "^2.2.8",
"@loopback/service-proxy": "^2.3.6",
"kafka-node": "^5.0.0",

Beginne mit dem Beispielcode und verfolge, wie offset und limit über den Explorer an das Backend für ein ausgewähltes Thema weitergegeben werden. Überprüfe das Verhalten, wenn weniger Nachrichten zurückgegeben werden als mit dem angeforderten limit, und bestätige, dass offset als Benutzereingabe verfügbar ist und das Laden abgeschlossen wird, ohne auf einen Timeout zu warten.