edit: Support kdmoncat diagrams in Routes, Projects

[epost]

As a user, I want to be able to view kdmoncat diagram source code on edit.statebox.cloud.

• [ ] kdmoncat diagrams
  • [x] Add support in Project
  • [x] Add support in RouteF
  • [x] Add support in ResolvedRouteF
  • [x] Do lookup of the diagram (placeholder, to be replaced by firebase code)
  • [x] Debug view not updating when rendering using appView component.
  • [x] Fix by (re)using the bricks component and slot instead.
  • [x] Discuss and experiment with Firebase updates and how this should work.
• [ ] projects
  • [x] add projects screen showing a projects gallery
  • [x] add 'create project' functionality
  • [x] add 'delete project' functionality
• [ ] misc
  • [x] merge PR #372