Refactor codebase to async/await - `spo propertybag set` until `spo report siteusagestorage`

-	`spo propertybag set`
-	`spo report activityfilecount`
-	`spo report activitypages`
-	`spo report activityusercounts`
-	`spo report activityuserdetails`
-	`spo report siteusagedetails`
-	`spo report siteusagefilecounts`
-	`spo report siteusagepages`
-	`spo report siteusagesitecount`
-	`spo report siteusagestorage`
