Add license-checker workflow (#79)

Author: harishp8889

.github/workflows/license-checker.yaml

@@ -0,0 +1,38 @@
+name: Weekly License Header Check
+
+on:
+  schedule:
+    - cron: '0 0 * * 1'  # Runs every Monday at 00:00 UTC
+  workflow_dispatch:
+
+jobs:
+  license-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Import GPG key
+        uses: crazy-max/ghaction-import-gpg@v6
+        with:
+          gpg_private_key: ${{ secrets.CSM_GPG_PRIVATE_KEY }}
+          git_user_signingkey: true
+          git_commit_gpgsign: true
+          git_tag_gpgsign: true
+          git_config_global: true
+
+      - name: Run License Header Checker
+        uses: dell/common-github-actions/license-checker@main
+        with:
+          autofix: true
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v7
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          branch: autofix/license-header
+          commit-message: "License header autofix"
+          title: "Automated PR for file changes"
+          body: "This PR was created automatically by a GitHub Action."
+          sign-commits: true
+          delete-branch: false