feat: add agenix for secrets management

modules/system.nix

@@ -214,19 +214,4 @@
   # android development tools, this will install adb/fastboot and other android tools and udev rules
   # see https://github.com/NixOS/nixpkgs/blob/nixos-unstable/nixos/modules/programs/adb.nix
   programs.adb.enable = true;
-
-
-  # users.groups = {
-  #   docker = {};
-  #   wireshark = {};
-  # };
-  # Define a user account. Don't forget to set a password with ‘passwd’.
-  users.users.ryan = {
-    isNormalUser = true;
-    description = "ryan";
-    extraGroups = [ "users" "networkmanager" "wheel" "docker" "wireshark" "adbusers" ];
-    openssh.authorizedKeys.keys = [
-        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJx3Sk20pLL1b2PPKZey2oTyioODrErq83xG78YpFBoj admin@ryan-MBP"
-    ];
-  };
 }

modules/user_group.nix

@@ -0,0 +1,18 @@
+{config, pkgs, ...}:
+
+{
+  users.groups = {
+    ryan = {};
+    docker = {};
+    wireshark = {};
+  };
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  users.users.ryan = {
+    isNormalUser = true;
+    description = "ryan";
+    extraGroups = [ "ryan" "users" "networkmanager" "wheel" "docker" "wireshark" "adbusers" ];
+    openssh.authorizedKeys.keys = [
+        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJx3Sk20pLL1b2PPKZey2oTyioODrErq83xG78YpFBoj"
+    ];
+  };
+}