feat: Add boil tool

[Techassi]

Note

This was ✨ magically ✨ developed in my spare time. I honestly don't know how it happened :)

This PR adds boil, a replacement for bake written in Rust.

• Adds more type-safety. The bake --preflight command is for example currently broken on main (even if unused).
• Adds more verbose and detailed error messages
• Separates local image dependencies from other build arguments
• Uses TOML for configuration files instead of Python modules
• Automatically appends _VERSION to local image versions ARGs
• Increases speed of data generation (before handing off to docker)

I additionally have some cool ideas (dealing with supported product versions for example), but I don't wanna spoil them just yet.