modules: init user-password

Init a user-password module, that allows setting the password for a
single user.

fixes #1351

clanModules/flake-module.nix

@@ -5,17 +5,18 @@
       imports = [ ./disk-layouts ];
     };
     borgbackup = ./borgbackup;
-    ergochat = ./ergochat;
     deltachat = ./deltachat;
+    ergochat = ./ergochat;
     localbackup = ./localbackup;
     localsend = ./localsend;
     matrix-synapse = ./matrix-synapse;
     moonlight = ./moonlight;
+    root-password = ./root-password;
     sshd = ./sshd;
     sunshine = ./sunshine;
     syncthing = ./syncthing;
-    root-password = ./root-password;
     thelounge = ./thelounge;
+    user-password = ./root-password;
     xfce = ./xfce;
     zt-tcp-relay = ./zt-tcp-relay;
   };