Add support for Redis Cluster to ext_redis.py

[liuhaoran1212]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

I would like to propose a feature to address a challenge I encountered while using Dify: the current ext_redis.py does not support Redis Cluster.Due to the lack of support for Redis Cluster, my efficiency and performance when using Dify for automation are lower.I hope ext_redis.py can support Redis Cluster.Redis Cluster can promote other healthy nodes to master nodes when the current master node encounters issues, enhancing the system's robustness. It also improves the system's memory utilization and write performance, making it suitable for larger-scale and more demanding data processing scenarios.Could you please let me know if it's feasible to make ext_redis.py support Redis Cluster?

2. Additional context or comments

No response

3. Can you help us with this feature?

• I am interested in contributing to this feature.