What is the purpose of the change

#281 #274 #285 #287

Brief changelog

The existing code for querying topics and consumers in the old version has a lot of redundant operations and repeated queries, which can easily lead to timeouts and errors when dealing with large data volumes. This PR mainly optimizes the speed of querying topics and consumers. Additionally, due to the longer time required to query consumers, caching is used to optimize the speed of the second query, and an option to refresh individual entries is provided. It also resolves the issue of confusion between delay topics and dead-letter topics.

Verifying this change

issues287

Follow this checklist to help us incorporate your contribution quickly and easily. Notice, it would be helpful if you could finish the following 5 checklist(the last one is not necessary)before request the community to review your PR.

• Make sure there is a Github issue filed for the change (usually before you start working on it). Trivial changes like typos do not require a Github issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
• Format the pull request title like [ISSUE #123] Fix UnknownException when host config not exist. Each commit in the pull request should have a meaningful subject line and body.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test(over 80% coverage) to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add integration-test in test module.
• Run mvn -B clean apache-rat:check findbugs:findbugs checkstyle:checkstyle to make sure basic checks pass. Run mvn clean install -DskipITs to make sure unit-test pass. Run mvn clean test-compile failsafe:integration-test to make sure integration-test pass.
• If this contribution is large, please file an Apache Individual Contributor License Agreement.
  /