Add FamilySizeTable support

[SergeyNefyodov]

Summary of the Pull Request

What is this about:

I added FamilySizeTable support. I didn't find a way how to watch a table inside a Family Document, but in Projects it works great

Quality Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings