Mark WCF.Message.Quote.Manager as deprecated

Author: Cyperghost

docs/migration/wsc61/deprecations_removals.md

@@ -74,6 +74,7 @@ With version 6.2, we have deprecated certain components and removed several othe
 - `WCF.Message.Preview` ([WoltLab/WCF#6114](https://github.com/WoltLab/WCF/pull/6114))
 - `WCF.Message.SmileyCategories` ([WoltLab/WCF#6115](https://github.com/WoltLab/WCF/pull/6115/))
 - `WCF.Message.Submit`
+- `WCF.Message.Quote.Manager` ([WoltLab/WCF#6163](https://github.com/WoltLab/WCF/pull/6163/))
 - `WCF.Moderation.Management` ([WoltLab/WCF#6116](https://github.com/WoltLab/WCF/pull/6116/))
 - `WCF.Moderation.Activation.Management` ([WoltLab/WCF#6116](https://github.com/WoltLab/WCF/pull/6116/))
 - `WCF.Moderation.Report.Management` ([WoltLab/WCF#6116](https://github.com/WoltLab/WCF/pull/6116/))