Add feedback options to streamlit page

[dcaribou]

We are relatively blind to the user experience in the streamlit app, as it's hard to tell if it's responsive enough, intuitive, etc. If there were some problems with it, providing users with an easy channel to give their feedback may help address them.

Some ideas

• Include a button to send a form to "rate" each page
• Add the "Edit this page" button (similar to that here)
• Using the set_page_config config to modify the menu iteams
  • Use "Report a bug" to create a new issue in this repo (link)
  • Use "Get Help" to point to the Dicussions tab
  • Maybe use "About"?