Rebrand and change name

[peetucket]

We need to:

• [x] update the logo image
• [x] anywhere that says "Systemic Racism Tracker", replace with "KNOW Systemic Racism"
• [x] repo changes:
  • [x] remame the repo name to ksr
  • [x] update checked out refs, see https://docs.github.com/en/github/administering-a-repository/managing-repository-settings/renaming-a-repository