Write version-checker roadmap

[hawksight]

As discussed in our internal sync, create a proposed roadmap for this project.

The themes discussed were:

• Fix bugs here
• Support for different image architectures WIP:Add architecture and os checks when fetching tags #60
• OCI repo support OCI fallback #159
• Test coverage (TBC)

[hawksight]

Comments from today's internal Jetstack call. Goals we want to do by achieving the above things ^

• Make it easier to contribute
  • Semi public meetings?
  • Jetstack channel in k8s slack?
  • Architecture images
• Work with every registry ⭐
• Make it easier to use, (deploy, configure, auth, tutorials -> docs)
  • prometheus queries
  • dashboard(s)
  • Static site? Github pages / hugo (@davidcollom creating issue for this)
• Publicity
  • logo
  • swag
  • stickers
  • Talks -> CFPs
    • @davidcollom writing one
• Performance / efficiency
  • So many more artifacts being uploaded, eg. Kyverno
  • Respectful of APIs ebing used
  • Respectful of the runtime environment

[hawksight]

Thanks @davidcollom for setting up https://github.com/jetstack/version-checker/milestone/1

[hawksight]

For the updated roadmap or v1 milestone, see here: https://github.com/jetstack/version-checker/milestone/1

Specifically we tried to set some criteria in the Themes vs Non Themes.

The actual issues my change / increase or decrease over time, but the themes should be consistent.