feat: add 'Create new folder' option to Move To Folder dialog (#423)

test/backend/account_sync_manager_test.dart

@@ -169,6 +169,15 @@ class _FakeMailboxes implements MailboxRepository {
         unreadCount: 0,
         totalCount: 0,
       );
+  @override
+  Future<Mailbox> createMailbox(String accountId, String name) async => Mailbox(
+        id: '$accountId:$name',
+        accountId: accountId,
+        path: name,
+        name: name,
+        unreadCount: 0,
+        totalCount: 0,
+      );
 }
 
 class _FakeEmails implements EmailRepository {

test/unit/account_sync_manager_test.dart

@@ -239,6 +239,15 @@ class FakeMailboxRepositoryWithInbox implements MailboxRepository {
         unreadCount: 0,
         totalCount: 0,
       );
+  @override
+  Future<Mailbox> createMailbox(String accountId, String name) async => Mailbox(
+        id: '$accountId:$name',
+        accountId: accountId,
+        path: name,
+        name: name,
+        unreadCount: 0,
+        totalCount: 0,
+      );
 }
 
 class _AccountRepositoryWithMissingPlugin implements AccountRepository {

test/unit/account_sync_manager_test.mocks.dart

@@ -235,6 +235,31 @@ class MockMailboxRepository extends _i1.Mock implements _i8.MailboxRepository {
           ),
         )),
       ) as _i5.Future<_i2.Mailbox>);
+
+  @override
+  _i5.Future<_i2.Mailbox> createMailbox(
+    String? accountId,
+    String? name,
+  ) =>
+      (super.noSuchMethod(
+        Invocation.method(
+          #createMailbox,
+          [
+            accountId,
+            name,
+          ],
+        ),
+        returnValue: _i5.Future<_i2.Mailbox>.value(_FakeMailbox_0(
+          this,
+          Invocation.method(
+            #createMailbox,
+            [
+              accountId,
+              name,
+            ],
+          ),
+        )),
+      ) as _i5.Future<_i2.Mailbox>);
 }
 
 /// A class which mocks [EmailRepository].

test/unit/reliability_runner_check_now_test.dart

@@ -77,6 +77,15 @@ class _FakeMailboxes implements MailboxRepository {
         unreadCount: 0,
         totalCount: 0,
       );
+  @override
+  Future<Mailbox> createMailbox(String accountId, String name) async => Mailbox(
+        id: '$accountId:$name',
+        accountId: accountId,
+        path: name,
+        name: name,
+        unreadCount: 0,
+        totalCount: 0,
+      );
 }
 
 class _FakeEmails implements EmailRepository {

test/unit/reliability_runner_test.dart

@@ -67,6 +67,15 @@ class _FakeMailboxes implements MailboxRepository {
         unreadCount: 0,
         totalCount: 0,
       );
+  @override
+  Future<Mailbox> createMailbox(String accountId, String name) async => Mailbox(
+        id: '$accountId:$name',
+        accountId: accountId,
+        path: name,
+        name: name,
+        unreadCount: 0,
+        totalCount: 0,
+      );
 }
 
 class _CountingEmails implements EmailRepository {

test/widget/helpers.dart

@@ -192,6 +192,20 @@ class FakeMailboxRepository implements MailboxRepository {
     _mailboxes.add(mailbox);
     return mailbox;
   }
+
+  @override
+  Future<Mailbox> createMailbox(String accountId, String name) async {
+    final mailbox = Mailbox(
+      id: '$accountId:$name',
+      accountId: accountId,
+      path: name,
+      name: name,
+      unreadCount: 0,
+      totalCount: 0,
+    );
+    _mailboxes.add(mailbox);
+    return mailbox;
+  }
 }
 
 class FakeEmailRepository implements EmailRepository {