Seperated all config stuff into common nixos modules

modules/nixos/dev.nix

@@ -0,0 +1,11 @@
+{ ... }:
+{
+  programs.nix-ld.enable = true;
+
+  virtualisation.libvirtd.enable = true;
+  programs.virt-manager.enable = true;
+  virtualisation.podman = {
+    enable = true;
+    dockerCompat = true;
+  };
+}