Support for Key Shared Policy

[iamseki]

pulsar-client version: 1.11.1
Pulsar version: 3.0.8

I've encountered an issue with a slow consumer in a key-shared subscription, causing new consumers to stall. This behavior could be mitigated in my use case by allowing out-of-order delivery via the AllowOutOfOrderDelivery parameter in KeySharedPolicy, as seen in other client implementations:

• go implementation
• java implementation

It looks like this functionality is already implemented in the C++ library. Do you have any plans to add support for it in the Node.js client? If not, could you provide guidance on how to contribute to this feature?

[shibd]

hi, @iamseki #420 supported it.

If you want to contribute other features, you can refer to #420; it's pretty simple.