Remove qtbittorrent because of an RCE bug, prepare more for enable by module for server

modules/system/services/general/libvirtd/default.nix

@@ -0,0 +1,57 @@
+{ config, lib, pkgs, ... }:
+{
+  options.system.libvirtd = {
+    enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Enable libvirtd and such";
+    };
+  };
+
+  config = lib.mkIf config.system.libvirtd.enable {
+    virtualisation = {
+      libvirtd = {
+        enable = true;
+        onBoot = "ignore";
+        onShutdown = "shutdown";
+        qemu = {
+          ovmf = {
+            enable = true;
+            packages = [
+              pkgs.OVMFFull.fd
+              pkgs.pkgsCross.aarch64-multiplatform.OVMF.fd
+            ];
+          };
+          swtpm.enable = true;
+        };
+      };
+    };
+
+    environment = {
+      systemPackages = with pkgs; [
+        virt-manager
+        virtiofsd
+        dnsmasq
+        spice-vdagent
+        looking-glass-client
+      ];
+
+      persistence."/persist".directories = [
+        "/var/lib/libvirt/dnsmasq"
+        "/var/lib/libvirt/nwfilter"
+        "/var/lib/libvirt/qemu"
+        "/var/lib/libvirt/secrets"
+        "/var/lib/libvirt/storage"
+        "/var/lib/libvirt/swtpm"
+      ];
+    };
+
+    # Needed to make NAT work
+    networking.firewall.trustedInterfaces = [
+      "virbr0"
+      "virbr1"
+    ];
+
+    systemd.tmpfiles.rules = [ "f /dev/shm/looking-glass 0660 jimbo libvirtd -" ];
+  };
+}