TF-1718 Add unsubscribeMail method to datasource/repository/interactor on jmap server

Signed-off-by: dab246 <tdvu@linagora.com>
(cherry picked from commit f9159b651866fbe8e2a1866231b5413cecc5b597)

model/lib/extensions/email_id_extensions.dart

@@ -1,5 +1,14 @@
+import 'package:jmap_dart_client/jmap/core/id.dart';
+import 'package:jmap_dart_client/jmap/core/patch_object.dart';
 import 'package:jmap_dart_client/jmap/mail/email/email.dart';
+import 'package:model/extensions/keyword_identifier_extension.dart';
 
 extension EmailIdExtension on EmailId {
   String get asString => id.value;
+
+  Map<Id, PatchObject> generateMapUpdateObjectUnsubscribeMail() {
+    return {
+      id: KeyWordIdentifierExtension.unsubscribeMail.generateUnsubscribeActionPath()
+    };
+  }
 }

model/lib/extensions/keyword_identifier_extension.dart

@@ -4,6 +4,8 @@ import 'package:model/email/mark_star_action.dart';
 import 'package:model/email/read_actions.dart';
 
 extension KeyWordIdentifierExtension on KeyWordIdentifier {
+  static final unsubscribeMail = KeyWordIdentifier('\$unsubscribe');
+
   String generatePath() {
     return '${PatchObject.keywordsProperty}/$value';
   }
@@ -31,4 +33,10 @@ extension KeyWordIdentifierExtension on KeyWordIdentifier {
       generatePath(): true
     });
   }
+
+  PatchObject generateUnsubscribeActionPath() {
+    return PatchObject({
+      generatePath(): true
+    });
+  }
 }