Wrong annotation is used for "processInstanceId" in ProcessAdminResource#migrateProcessInstanceWithSubprocess method + ProcessAdminClient new methods

Expected url for migration service method migrateProcessInstanceWithSubprocess is as the example below:

http://localhost:46655/kie-server-services/services/rest/server/admin/containers/definition-project/processes/instances/6/subprocess?targetContainerId=myTargetContainerId&targetProcessId=myTargetProcessId

However, expected param "processInstanceId" is marked with annotation "@QueryParam", forcing to pass the "processInstanceId" in the query url as well. Instead, it should be "@PathParam"

In addition, we need to update the ProcessAdminClient java class to make use of these new methods (migrateProcessInstanceWithSubprocess).