Add global `g t` shortcut to go to todos

What does this MR do?

Add a global g t shortcut to go to todos.

Are there points in the code the reviewer needs to double check?

Did I miss anything?

Why was this MR needed?

To get to your todos now, you have to scroll to the top of the page, which either takes a long time, or involves using the keyboard. So we may as well just use the keyboard all the time

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together