feat(xo-server): add xenStoreData to XO VM objects (#7316)

The initial support added in #7055 to support terraform resource support doesn't provide read access to a VM's state.

Since Tterraform's model requires read and write access to the resource it's managing, this PR implements the missing piece for terra-farm/terraform-provider-xenorchestra#261.

packages/xo-server/src/xapi-object-to-xo.mjs

@@ -429,6 +429,7 @@ const TRANSFORMS = {
       VGPUs: link(obj, 'VGPUs'),
       $VGPUs: link(obj, 'VGPUs'),
       nicType: obj.platform.nic_type,
+      xenStoreData: obj.xenstore_data,
     }
 
     if (isHvm) {