Add "SOURCE_NAME" column automatically for Multi-Source models

Currently Teiid adds SOURCE_NAME pseudo column when the model defines as multi-source to all the tables. This is not reflected in the metadata. However based on the community requests it looks like providing a way to automatically adding this to the tables and procedures is useful in dynamic vdb scenarios.

This can be added when a property like

<property name="multi-source-column" value="

"/>