GitLab

* Update to CUDA 12.4

* poetry2nix: follow tgi-nix nixpkgs

Try to reduce the number of router/launcher rebuilds by filtering
sources. In this way, recompiles should only be triggered by changes
in Cargo or Rust files.

This is less incremental than crate2nix, but does build all dependencies
separately, so avoids full rebuilds.

Add flake.nix