feat: invoke progress events during dialing

[achingbrain]

If the user passes an onProgress callback to a dial request, invoke the callback with progress events during the dial.

Change checklist

• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation if necessary (this includes comments as well)
• [ ] I have added tests that prove my fix is effective or that my feature works