Add attached datasource/translator/importer matrix as an appendix in the docs

The attached document provides a matrix that indicates the relationships between the supported datasources, which translator to use and how the source model can be created from the datasource. This should be added as an appendix in the docs.

After discussion with Ken, he recommended a designer appendix doc. would be a good place.

Not sure how to handle Appendicies in Docbook, haven't done it before.

Maybe convert current Section 10 (Teiid Designer UI Reference) to an Appendix also