linux: add openssh and tb user account

system/linux/openssh.nix

@@ -0,0 +1,14 @@
+{ ... }:
+{
+  # This setups a SSH server. Very important if you're setting up a headless system.
+  # Feel free to remove if you don't need it.
+  services.openssh = {
+    enable = true;
+    settings = {
+      # Require a ssh key login for root.
+      PermitRootLogin = "prohibit-password";
+      # Use keys only. Remove if you want to SSH using password (not recommended)
+      PasswordAuthentication = true;
+    };
+  };
+}

system/linux/user-tb.nix

@@ -0,0 +1,14 @@
+{ ... }:
+{
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  users.users.tb = {
+    isNormalUser = true;
+    description = "Timo Bingmann";
+    uid = 7777;
+    group = "users";
+    extraGroups = [ "wheel" "networkmanager" "video" "docker" "scanner" ];
+    home = "/home/tb";
+    homeMode = "711";
+    hashedPassword = "$y$j9T$wYCQHfl0OyCyXBQRo7aOe.$5LY3ulvc1uKT/Squ7VSVSXvMR/FRg2MUbOmUfnN5CR7";
+  };
+}