Add component extraction for multi-component images; use component extraction with the 2D segmentation tools

Summary:
The 'mitkExtractSliceFilter'-class is extended to extract a specified component from a multi-component image.
Extracting a specified component will be performed by setting

filter->SetComponent(component);
filter->SetComponentFlag(true);

Test Plan: -

Reviewers: goch, O1 MITK Core

Reviewed By: goch, O1 MITK Core

Subscribers: kalali, goch

Maniphest Tasks: T19935

Differential Revision: https://phabricator.mitk.org/D33