More tablet UI

[spezian]

Current ideas:

• More masonry views
• Use navigation rail
  • https://m3.material.io/components/navigation-rail/overview
• Constrain view
  • Don't just use full width and height, sometimes this is unnecessary and looks ugly.
  • E. g. Settings, login, ...
• Settings double view?
  • Like on Samsung
• Conversations double view?
  • Maybe also show menu items directly