DeepStack UI updates

[robmarkcole]

The deepstack-ui repo is on: https://github.com/robmarkcole/deepstack-ui

I did recently update this to latest streamlit version. Other changes I would like to make include:

• Deepstack branding by putting the deepstack logo on the front page
• Support for the face detection endpoint
• Support for viewing the deepstack instance health metrics

[robmarkcole]

track in respective repo