Webgpu / Dawn rewrite todo list

[malytomas]

• performance
• font smoothing
• dynamic resolution
• avoid fetching textures in scene render (already in binding group)
• asset manager fix (for updating models bindings)
• hot-reloading fix (eg. model keeps old textures)
• replace dawn cmake
• first-time debug builds often fail due to debug_iterator_level
• world-space text bug
• world-space gui
• virtual reality