[Docs]: Finish FrameworkUI Demo

[HadenSmith]

Where is the documentation issue?

Incomplete FrameworkUI demo

What type of documentation issue is this?

Example needed

Describe the issue

Incomplete FrameworkUI demo

Suggested change

Make FrameworkUI.Demo full featured to improve usability:

• IO with SQLite
• Undo-Redo on properties, collections, and plots
• Create simple icons, etc

Screenshots or files

No response