[DISCUSS] PIP-407 Add a newMessage API to create a message with a schema and transaction

Hello, I've created a PIP to fill a gap in the Producer public API, allowing for new messages to be created with a schema and a transaction. PR: https://github.com/apache/pulsar/pull/23950 Thank you, Ómar

[DISCUSS] PIP-406: Introduce pulsar_subscription_dispatch_throttled_msgs and bytes metrics

I have created a PIP to introduce pulsar_subscription_dispatch_throttled_msgs and bytes metrics PR: https://github.com/apache/pulsar/pull/23945 Thanks, Baodi Shi