add shellcheck action

.github/workflows/shell-check.yml

@@ -0,0 +1,38 @@
+# Copyright (c) 2025, NVIDIA CORPORATION.
+#
+# 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.
+
+# A workflow to check shell script syntax
+name: shell check
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  shell-check:
+    runs-on: ubuntu-latest
+    if: "!contains(github.event.pull_request.title, '[bot]')"
+    steps:
+      - name: Get checkout depth
+        run: |
+          echo "PR_FETCH_DEPTH=$(( ${{ github.event.pull_request.commits }} + 10 ))" >> $GITHUB_ENV
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: ${{ env.PR_FETCH_DEPTH }}
+
+      - name: Run ShellCheck
+        uses: ludeeus/action-shellcheck@master
+