Implement new hamburger menu navigation

Mocks https://projects.invisionapp.com/d/main#/console/18532170/400085460/preview

Behind the same feature flag as the new navigation

• Avatar and channel information header
• Link to newsfeed
• Link to discovery
• Link to groups
• Link to wallet
• Link to analytics
• Link to boost
• Link to Settings
• Light mode
• Dark mode
• Unit tests
• E2E tests
• Pointed to a 3.16.0 release branch