feat(table_topic_demo): Add Table Topic Demo for CDC Scenario

[daniel-y]

Task

Provide a runnable demo for the "Change Data Capture (CDC)" scenario using AutoMQ's Table Topic feature.

Background

Using Table Topics for CDC is a powerful feature. A demo will show users how to stream database changes into AutoMQ and represent the final state in a table topic, which can then be queried.

Acceptance Criteria

• A docker-compose setup is provided, including a source database (e.g., MySQL or Postgres), a Debezium connector, and AutoMQ.
• The demo is configured to capture changes from a sample table and stream them to a table topic.
• A client or tool is provided to query the table topic and show the materialized view of the source table.
• The table-topic-solutions/cdc-scenario/README.md is updated with a clear explanation of the CDC use case and step-by-step instructions to run the demo.