feat: refactor the modules/servers directory.

modules/servers/common/podman.nix

@@ -0,0 +1,28 @@
+{pkgs, ...}: {
+  virtualisation = {
+    podman = {
+      enable = true;
+      dockerCompat = true;
+      autoPrune = {
+        enable = true;
+        dates = "weekly";
+        flags = [
+          "--filter=until=24h"
+          "--filter=label!=important"
+        ];
+      };
+      defaultNetwork.settings.dns.enable = true;
+    };
+  };
+
+  # Enable system podman autoupdate timer
+  systemd.timers.podman-auto-update = {
+    enable = true;
+    wantedBy = ["timers.target"];
+  };
+
+  environment.systemPackages = with pkgs; [
+    podman-compose
+    podman-tui
+  ];
+}