feat(data-ana): implement complete CDC pipeline MySQL to ClickHouse

Debezium + Kafka + aiokafka consumer with table routing.

E2E verified: MySQL INSERT to ClickHouse upsert.

infra/clickhouse/users.d/custom-users.xml

@@ -0,0 +1,14 @@
+<clickhouse>
+  <!-- 覆盖 default-user.xml 的本地限制，允许 default 用户从任意 IP 用密码访问 -->
+  <users>
+    <default>
+      <password>clickhouse</password>
+      <networks>
+        <ip>::/0</ip>
+      </networks>
+      <profile>default</profile>
+      <quota>default</quota>
+      <access_management>1</access_management>
+    </default>
+  </users>
+</clickhouse>