Support custom blueprints without building `authentikComponents`

I'm currently looking into supporting (additional) custom blueprints without having to define a custom scope and rebuild `authentikComponents`. Ideal would be a module option although I'm not sure about the design as blueprint files seemingly can't be symlinks and have to end in `.yaml`. A way around could be requiring a `types.attrsOf types.pathInStore` for `${name}.yaml` -> `/nix/store/anything.yml` or even `types.submodule { freeformType = settingsFormat.type; };` (that way not supporting blueprint files though)