feat: provide self-contained binary build

[xynydev]

• Local installation on any distro using a custom script similar to rustup
• Takes less space in CI/CD

[gmpinder]

Yes, when we get a workflow setup with cargo smart-release (the release tool I've been using), I'll be able to start packaging binaries in the releases.

[gmpinder]

Actually, if you want you can run inside of the image I build. I package everything you need in registry.gitlab.com/wunker-bunker/blue-build:latest and registry.gitlab.com/wunker-bunker/blue-build:latest-alpine.

Obviously once we're building in github we'll want to use ghcr.io, but this will help reduce build times.