Add ShellCheck GitHub Action for bash scripts

Signed-off-by: sarfraj89 <try.sarfraj@gmail.com>

.github/workflows/shellcheck.yml

@@ -0,0 +1,28 @@
+name: ShellCheck
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
+    paths:
+      - '**.sh'
+      - '.github/workflows/shellcheck.yml'
+
+permissions:
+  contents: read
+
+jobs:
+  shellcheck:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Run ShellCheck
+        uses: ludeeus/action-shellcheck@master
+
+        with:
+          scandir: scripts
+          severity: error