Multi-topics reader support

**Is your feature request related to a problem? Please describe.**
Currently, there is an issue with the reader implementation. If the reader is creating, it won't get the topic metadata from the topic. The reader can only read messages from a single topic. If the topic is a partitioned topic, the reader won't know that and will try to create a non-partition topic with the same name. And it will lead to this issue: https://github.com/apache/pulsar/issues/22032

**Describe the solution you'd like**
- Support multi-topics reader

**Describe alternatives you've considered**
No

**Additional context**
No