TF-3515 Add save email as template feature

lib/features/composer/presentation/model/create_email_request.dart

@@ -31,7 +31,9 @@ class CreateEmailRequest with EquatableMixin {
   final MailboxId? outboxMailboxId;
   final MailboxId? sentMailboxId;
   final MailboxId? draftsMailboxId;
+  final MailboxId? templateMailboxId;
   final EmailId? draftsEmailId;
+  final EmailId? templateEmailId;
   final EmailId? answerForwardEmailId;
   final EmailId? unsubscribeEmailId;
   final MessageIdsHeaderValue? messageId;
@@ -64,7 +66,9 @@ class CreateEmailRequest with EquatableMixin {
     this.outboxMailboxId,
     this.sentMailboxId,
     this.draftsMailboxId,
+    this.templateMailboxId,
     this.draftsEmailId,
+    this.templateEmailId,
     this.answerForwardEmailId,
     this.unsubscribeEmailId,
     this.messageId,
@@ -99,7 +103,9 @@ class CreateEmailRequest with EquatableMixin {
     outboxMailboxId,
     sentMailboxId,
     draftsMailboxId,
+    templateMailboxId,
     draftsEmailId,
+    templateEmailId,
     answerForwardEmailId,
     unsubscribeEmailId,
     references,