Move dev tools to separate repo or workspace

[apljungquist]

This is based on a few observations:

• Updating checksums when changing the apps or the library crates that support them is tedious and feels meaningless because of course the checksums will change.
• The checksums are helpful when developing the build tools for ensuring that changes to the build tools don't inadvertently changes the built artifacts and that builds are reproducible.
• Build tools probably don't need to adhere to as strict dependency audits, especially when it comes to licenses.
  • Though I think this could be fixed in the same repo. I can't remember why we don't, I think I either was too lazy to set it up or worried it would slow down CI.
• The only first party dependency that the two sides of the project share is vapix and it seems unlikely that this intersection would grow.

Downsides include:

• Updating the two sides together would be more difficult e.g. if
  • building a new app requires new features from the build system
  • the tools need example app(s) to test themselves
• Information fragmentation; it becomes harder to maintain a consistent documentation and moving information may involve commits in multiple repos which is tedious and makes it difficult to trace its origin.

Maybe this would be better as a discussion but discussions are disabled and I cannot enable them since I am no longer an admin.