Get Priority Parameter As A Part Of Scheduled Workflow Definition

[jas34]

While working on the PR with @vivianzheng404 on the PR - https://github.com/jas34/scheduledwf/pull/32 we realised that the conductor has introduced a priority parameter within the workflow start method. In PR #32 this has been hard coded with value=1. Ideally, this has to be consumed from the scheduled workflow definition. This ticket is being opened to implement after release-3.0.0. Refer to conversation - https://github.com/jas34/scheduledwf/pull/32/files#r1251489871