Global hotkey navigation

[paolodamico]

Changes

This PR introduces global hotkey navigation to make our overall experience smoother for power users. Everything is behind feature flag hotkeys-3740.

• Closes Test hotkey support to improve UX #2907.
• Allows navigating to any of the scenes accessed through the main navigation (press "G" anywhere to try out).
  
• Allows navigating between the insights views (fully supports lifecycle & stickiness if remove-shownas is enabled).
  
• Introduces a tooltip description to menu items to increase feature discoverability. This is also the basis for global keyboard navigation discoverability.
  

In addition this PR:

• Converts Insights.tsx to Typescript and fixes a bunch of Typescript errors.
• Standardizes and makes styles for hotkeys global.
• Usage is fully instrumented.

Checklist

• All querysets/queries filter by Organization, by Team, and by User
• Django backend tests
• Jest frontend tests
• Cypress end-to-end tests

[paolodamico]

I would love to get particularly input on both the concept of the tooltip message for the navigation bar items, and the actual copy. Want to make sure it's helpful and not intrusive.

[mariusandra]

One feature flag check bug and some thoughts.

[paolodamico]

Alright all feedback addressed, ready for a final look.

[mariusandra]

Looks good!

[corywatilo]

I was playing around with a way to make them a little more subtle in the nav tooltips. (This eliminated the need for the "Keyboard navigation" label.)

As for the prominence for the analysis views, I sort of agree with Marius. I did a quick version to see if we can make them blend a bit more and here was my attempt: