feat(users): define authorized SSH keys

users/default.nix

@@ -8,6 +8,7 @@
   - `extraGroups`: groups (optionally)
   - `shell`: User's shell
   - `session`: User's default graphical session (optionally)
+  - `sshKeys`: User's authorized SSH keys (optionally)
 
   Session must have format of "{type}:{session}" where type is one of `co` (short for "compositor") and `de` (short for "desktop environment").
   This `type` is actually important, because it depends where nix will search corresponding option for enabling your session.
@@ -64,6 +65,7 @@ lib.foldl' (acc: obj: lib.recursiveUpdate acc obj) { } (
           isNormalUser = true;
           shell = pkgs."${cfg.shell}";
           extraGroups = cfg.extraGroups or [ ];
+          openssh.authorizedKeys.keys = cfg.sshKeys or [ ];
         };
     }) cfg.usersList)