Add filter to provide a distribution statement to the written dream3d file

[imikejackson]

When working with data sets from vendors or national labs there should be a way to annotate the file with the proper data distribution statement. A filter could be created or an option added to the "Write DREAM3D File" filter to add a user provided distribution statement.

The filter or option could allow the user to select from standard templates for DoD or National Labs or provide their own statement from a text file.