message: Add none permissions for widget rpcs
diff: "rpcs": {
  "CreateWindow": {
  "hmi_levels": [
  + "NONE",
  "BACKGROUND",
  "FULL",
  "LIMITED"
  },
  "DeleteWindow": {
  "hmi_levels": [
  + "NONE",
  "BACKGROUND",
  "FULL",
  "LIMITED"
  