[Improvement]: Simplify the quick demo process

[tcodehuber]

Search before asking

• I have searched in the issues and found no similar issues.

What would you like to be improved?

• Drop the quick demo image and simplify the existing quick demo
  process, depending on the amoro and minio images
• Users can insert/delete/update rows by ams' Terminal page, then we can
  trigger minor/major processes instead of installing flink cdc env

How should we improve?

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Subtasks

No response

Code of Conduct

• I agree to follow this project's Code of Conduct