feat(nixos): add podman module

nix/modules/options/virtualisation.nix

@@ -0,0 +1,37 @@
+{ lib, config, ... }:
+let
+  inherit (lib.modules) mkIf;
+  inherit (lib.options) mkEnableOption;
+  inherit (cfg.lib.modules) forAllUsers;
+  cfg = config.flake;
+in
+{
+  flake.modules.nixos.default =
+    { pkgs, config, ... }:
+    {
+      options = {
+        podman.enable = mkEnableOption "";
+        podman.distrobox.enable = mkEnableOption "";
+      };
+      config = mkIf config.podman.enable {
+        virtualisation = {
+          containers.enable = true;
+          podman = {
+            enable = true;
+            dockerCompat = true;
+            defaultNetwork.settings.dns_enabled = true;
+          };
+        };
+        users.users = forAllUsers {
+          extraGroups = [ "podman" ];
+          autoSubUidGidRange = true;
+        };
+        home-manager.sharedModules = [
+          {
+            home.packages = [ pkgs.distrobox ];
+            persistDirs = [ ".local/share/containers" ];
+          }
+        ];
+      };
+    };
+}