add option to detache the VM from CLI

lib/virtual-machine.rb

@@ -58,6 +58,10 @@ module VirtualMachine
         else 
             options[:arch] = System.arch_to_symbol(options[:arch])
         end
+
+        if options[:detached] == nil
+            options[:detached] = false
+        end
     end
 
     def self.archive(options)
@@ -90,7 +94,7 @@ module VirtualMachine
             options[:arch],
             disk_img_path,
             cpus: [1, System.cpus - 2].max,
-            detach: true
+            detach: options[:detached]
         )
     end
 
@@ -109,7 +113,8 @@ module VirtualMachine
                 disk_img_path,
                 cpus: [1, System.cpus - 2].max,
                 cdrom: path,
-                detach: true
+                detach: options[:detached],
+                display: DisplayMode.window
             )
         end
     end