[PM-27280] Support v2 encryption on key-connector signups (#6712)

* account v2 registration for key connector

* use new user repository functions

* test coverage

* integration test coverage

* documentation

* code review

* missing test coverage

* fix failing test

* failing test

* incorrect ticket number

* moved back request model to Api, created dedicated data class in Core

* sql stored procedure type mismatch, simplification

* key connector authorization handler

src/Sql/dbo/KeyManagement/Stored Procedures/User_UpdateKeyConnectorUserKey.sql

@@ -0,0 +1,28 @@
+CREATE PROCEDURE [dbo].[User_UpdateKeyConnectorUserKey]
+    @Id UNIQUEIDENTIFIER,
+    @Key VARCHAR(MAX),
+    @Kdf TINYINT,
+    @KdfIterations INT,
+    @KdfMemory INT,
+    @KdfParallelism INT,
+    @UsesKeyConnector BIT,
+    @RevisionDate DATETIME2(7),
+    @AccountRevisionDate DATETIME2(7)
+AS
+BEGIN
+    SET NOCOUNT ON
+
+    UPDATE
+        [dbo].[User]
+    SET
+        [Key] = @Key,
+        [Kdf] = @Kdf,
+        [KdfIterations] = @KdfIterations,
+        [KdfMemory] = @KdfMemory,
+        [KdfParallelism] = @KdfParallelism,
+        [UsesKeyConnector] = @UsesKeyConnector,
+        [RevisionDate] = @RevisionDate,
+        [AccountRevisionDate] = @AccountRevisionDate
+    WHERE
+        [Id] = @Id
+END