feat: enable qemu

hosts/server/configuration.nix

@@ -121,9 +121,28 @@
     };
   };
 
-  virtualisation.docker = {
+  virtualisation = {
+    docker = {
       enable = true;
     };
+    libvirtd = {
+      enable = true;
+      qemu = {
+        package = pkgs.qemu_kvm;
+        runAsRoot = true;
+        swtpm.enable = true;
+        ovmf = {
+          enable = true;
+          packages = [
+            (pkgs.OVMF.override {
+              secureBoot = true;
+              tpmSupport = true;
+            }).fd
+          ];
+        };
+      };
+    };
+  };
 
   # Open ports in the firewall.
   networking.firewall.allowedTCPPorts = [