Actually use Device Type for mails (#4916)

- match Bitwarden behaviour
- add a different segment in mails for Device Name

src/db/schemas/mysql/schema.rs

@@ -169,6 +169,7 @@ table! {
         user_uuid -> Text,
         device_uuid -> Text,
         device_name -> Text,
+        device_type -> Integer,
         login_time -> Timestamp,
         ip_address -> Text,
     }