📝 Create Power BI report for SSW.Dory

[Jord-Gui]

Cc: @leahy268

As raised by @bradystroud, would be good to have a report that shows the metrics of SSW.Dory emails.

### Tasks
- [x] Iron out requirements with Brady and Lu
- [x] Send task list to Lu (via Outlook if he prefers or update this issue)

[Jord-Gui]

Done - email task has been sent to @zl24622

[Jord-Gui]

PBI to track this can be found in CRM backlog https://dev.azure.com/ssw2/SSW.CRM/_workitems/edit/52360/