TF-4195 Add Label to Thread

lib/features/email/data/datasource_impl/email_datasource_impl.dart

@@ -570,4 +570,21 @@ class EmailDataSourceImpl extends EmailDataSource {
       );
     }).catchError(_exceptionThrower.throwException);
   }
+
+  @override
+  Future<void> addLabelToThread(
+    Session session,
+    AccountId accountId,
+    List<EmailId> emailIds,
+    KeyWordIdentifier labelKeyword,
+  ) {
+    return Future.sync(() async {
+      return await emailAPI.addLabelToThread(
+        session,
+        accountId,
+        emailIds,
+        labelKeyword,
+      );
+    }).catchError(_exceptionThrower.throwException);
+  }
 }

lib/features/email/data/datasource_impl/email_hive_cache_datasource_impl.dart

@@ -580,4 +580,9 @@ class EmailHiveCacheDataSourceImpl extends EmailDataSource {
   Future<void> addLabelToEmail(Session session, AccountId accountId, EmailId emailId, KeyWordIdentifier labelKeyword) {
     throw UnimplementedError();
   }
+
+  @override
+  Future<void> addLabelToThread(Session session, AccountId accountId, List<EmailId> emailIds, KeyWordIdentifier labelKeyword) {
+    throw UnimplementedError();
+  }
 }

lib/features/email/data/datasource_impl/email_local_storage_datasource_impl.dart

@@ -356,4 +356,9 @@ class EmailLocalStorageDataSourceImpl extends EmailDataSource {
   Future<void> addLabelToEmail(Session session, AccountId accountId, EmailId emailId, KeyWordIdentifier labelKeyword) {
     throw UnimplementedError();
   }
+
+  @override
+  Future<void> addLabelToThread(Session session, AccountId accountId, List<EmailId> emailIds, KeyWordIdentifier labelKeyword) {
+    throw UnimplementedError();
+  }
 }

lib/features/email/data/datasource_impl/email_session_storage_datasource_impl.dart

@@ -270,4 +270,9 @@ class EmailSessionStorageDatasourceImpl extends EmailDataSource {
   Future<void> addLabelToEmail(Session session, AccountId accountId, EmailId emailId, KeyWordIdentifier labelKeyword) {
     throw UnimplementedError();
   }
+
+  @override
+  Future<void> addLabelToThread(Session session, AccountId accountId, List<EmailId> emailIds, KeyWordIdentifier labelKeyword) {
+    throw UnimplementedError();
+  }
 }