Adding BrokerProperties when sending message to queue or topic

[Gaelik-git]

Following this documentation : https://learn.microsoft.com/en-us/rest/api/servicebus/message-headers-and-properties#message-headers

I would like the possibility to set an ScheduledEnqueueTimeUtc (other option could be added in the future)

I updated the existing send_message method, making to modification a breaking change. Do you think it's ok like this ?
Should I create a new method for sending messages with options set ?

Thanks

[heaths]

Thanks for improving Service Bus SDK! One blocking comment, though. I'm okay with the break in this case, but let's not special-case too much when we do that. With an options bag, we can add more in the future without breaking.

[heaths]

Thank you! I just have one question/nit but otherwise LGTM. Once I get this merged, I'll publish new versions.

[Gaelik-git]

Everything should be ready, thanks for the feedback

[heaths]

Thank you for making the requested changes!