fix: restore script called by deleted job

Restore the script called by the deleted job. A PR runs from the
workflows in the commit onto which the PR would be merged, not
the workflows in this current commit. Therefore a job and it's
script cannot be removed at the same time. First, the removal of
the job must be merged. Then, the dangling script can be removed
in a subsequent commit.

tensorflow/lite/micro/tools/ci_build/test_bazel_tflite_tools.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Copyright 2019 The TensorFlow Authors. All Rights Reserved.
+#
+# 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.
+# ==============================================================================
+
+set -e
+set -x
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR=${SCRIPT_DIR}/../../../../..
+cd "${ROOT_DIR}"
+
+source tensorflow/lite/micro/tools/ci_build/helper_functions.sh
+
+readable_run bazel test tensorflow/lite/tools/... \
+  --config=ci \
+  --test_output=errors