Refactor codebase to async/await – `spo site recyclebinitem clear` until `spo sitedesign apply`

-	`spo site recyclebinitem clear`
-	`spo site recyclebinitem list`
-	`spo site recyclebinitem move`
-	`spo site recyclebinitem remove`
-	`spo site recyclebinitem restore`
-	`spo site remove`
-	`spo site rename`
-	`spo site set`
-	`spo sitedesign add`
-	`spo sitedesign apply`
