nixos/alloy: init module

This adds a NixOS module for Grafana Alloy.

I started from the grafana-agent one but dropped all settings and config
management whatsoever.

Grafana Alloy uses its own Alloy config format (similar to HCL), which
is not really possible to express in Nix.
Simply pointing to a path in `/etc`, and leaving it up to the user to configure
it via `environment.etc` allows the user to arrange config files however
it makes most sense for them.

The module, systemd unit etc is called "alloy", not "grafana-alloy" to
follow the way it's packaged on other distros, to follow POLA.

0 files changed, 0 insertions, 0 deletions