feat: introduce treefmt and fmt all

nix/os/devices/justyna-p300/system.nix

@@ -1,11 +1,8 @@
-{
-  pkgs,
-  lib,
-  config,
-  ...
-}: let
+{ pkgs, lib, ... }:
+let
   passwords = import ../../../variables/passwords.crypt.nix;
-in {
+in
+{
   networking.firewall.enable = true;
   networking.firewall.allowedTCPPorts = [
     # iperf3
@@ -39,11 +36,13 @@ in {
     # udev.packages = [ pkgs.gnome3.gnome-settings-daemon ];
   };
 
-  security.pki.certificateFiles = ["${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt"];
+  security.pki.certificateFiles = [ "${pkgs.cacert}/etc/ssl/certs/ca-bundle.crt" ];
 
-  services.xserver.videoDrivers = ["modesetting"];
+  services.xserver.videoDrivers = [ "modesetting" ];
 
   boot.kernelPackages = lib.mkForce pkgs.linuxPackages_latest;
 
-  nix.gc = {automatic = true;};
+  nix.gc = {
+    automatic = true;
+  };
 }