Bulk Confirm (#1345)

* Add support for bulk confirm

* Add missing sproc to migration

* Change ConfirmUserAsync to internally use ConfirmUsersAsync

* Refactor to be a bit more readable

* Change BulkReinvite and BulkRemove to return a list of errors/success

* Refactor

* Fix removing owner preventing removing non owners

* Add another unit test

* Use fixtures for OrganizationUser and Policies

* Fix spelling

util/Migrator/DbScripts/2021-05-18_00_BulkConfirm.sql

@@ -0,0 +1,51 @@
+IF OBJECT_ID('[dbo].[User_ReadByIds]') IS NOT NULL
+BEGIN
+    DROP PROCEDURE [dbo].[User_ReadByIds]
+END
+GO
+
+CREATE PROCEDURE [dbo].[User_ReadByIds]
+@Ids AS [dbo].[GuidIdArray] READONLY
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    IF (SELECT COUNT(1) FROM @Ids) < 1
+        BEGIN
+            RETURN(-1)
+        END
+
+    SELECT
+        *
+    FROM
+        [dbo].[UserView]
+    WHERE
+        [Id] IN (SELECT [Id] FROM @Ids)
+END
+GO
+
+IF OBJECT_ID('[dbo].[User_ReadPublicKeysByOrganizationUserIds]') IS NOT NULL
+    BEGIN
+        DROP PROCEDURE [dbo].[User_ReadPublicKeysByOrganizationUserIds]
+    END
+GO
+
+CREATE PROCEDURE [dbo].[User_ReadPublicKeysByOrganizationUserIds]
+    @OrganizationId UNIQUEIDENTIFIER,
+    @OrganizationUserIds [dbo].[GuidIdArray] READONLY
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    SELECT
+        OU.[Id],
+        U.[PublicKey]
+    FROM
+        @OrganizationUserIds OUIDs
+            INNER JOIN
+        [dbo].[OrganizationUser] OU ON OUIDs.Id = OU.Id AND OU.[Status] = 1 -- Accepted
+            INNER JOIN
+        [dbo].[User] U ON OU.UserId = U.Id
+    WHERE
+            OU.OrganizationId = @OrganizationId
+END