Vendor Command + HID fix (#618)

* Fixes CBOR message passing through Vendor HID

I did all my tests on hardware with this fix, and now I'm surprised that
it didn't end up on develop. So should have been part of a former PR.

* vendor channel test

* forward vendor HID correctly for upgrades

* fixes cargo fmt

* removes script and updates documentation to match

tools/perform_upgrade.sh

@@ -1,31 +0,0 @@
-#!/bin/bash
-# Copyright 2021 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Creates a signature key and configures the public key.
-# The device will not be locked down for testing purposes.
-# Generates the binary and upgrades OpenSK.
-# To be run from the OpenSK base path.
-
-set -e
-
-BOARD="$1"
-
-./deploy.py --board="${BOARD}" --opensk --programmer=none $2
-python3 -m tools.deploy_partition --board="${BOARD}" $2
-if nrfjprog --reset --family NRF52 ; then
-  echo "Upgrade finished!"
-else
-  echo "Please replug OpenSK to reboot"
-fi