added virtualisation with qemu and virt-manager

also moved virt-manager from home-manager to modules/virtualisation.nix
because it doesnt work without qemu so may as well

added user blue to group libvirtd

modules/aagl.nix

@@ -1,4 +1,4 @@
-{ config, ... }:
+{ ... }:
 {
   programs.honkers-railway-launcher.enable = true;
 }

modules/packages.nix

@@ -15,6 +15,5 @@
     pciutils
     dmidecode
     nixd
-    qemu
   ];
 }

modules/virtualisation.nix

@@ -0,0 +1,6 @@
+{...}:{
+  virtualisation.libvirtd = {
+    enable = true;
+  };
+  programs.virt-manager.enable = true;
+}