[chore] add shellcheck to CI (#3664)

Author: atoulme

.github/workflows/shellcheck.yaml

@@ -0,0 +1,32 @@
+name: shellcheck
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+permissions: {}
+
+jobs:
+  shellcheck:
+    name: shellcheck
+    runs-on: ubuntu-24.04
+    env:
+      VERSION: v0.10.0
+    steps:
+      - uses: actions/checkout@v4
+      - name: shellcheck ci scripts
+        uses: ludeeus/[email protected]
+        env:
+          SHELLCHECK_OPTS: -x -e SC2059 -e SC2086
+        with:
+          scandir: ".ci"
+          severity: warning
+          version: ${{ env.VERSION }}
+      - name: shellcheck hack scripts
+        uses: ludeeus/[email protected]
+        env:
+          SHELLCHECK_OPTS: -x -e SC2059 -e SC2086
+        with:
+          scandir: "hack"
+          severity: warning
+          version: ${{ env.VERSION }}