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

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.

首先定位 "Write DREAM3D File" 过滤器及其现有的输出选项。定义用于添加用户提供的分发声明的选定界面，包括标准的 DoD 或 National Lab 模板，以及从文本文件加载自定义声明；当该声明包含在写出的 DREAM3D 文件中时，工作即完成。

由索引模型根据 Issue 内容生成。