Add shellcheck workflow

.forgejo/workflows/shellcheck.yml

@@ -0,0 +1,35 @@
+name: Validate Code
+
+on:
+  push:
+    paths:
+      - '**/*.sh'
+  pull_request:
+    paths:
+      - '**/*.sh'
+
+jobs:
+  lint-and-validate:
+    runs-on: docker
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Install ShellCheck
+        run: |
+          apt-get update && apt-get install -y shellcheck
+
+      - name: Lint Bash Scripts
+        run: |
+          find . -name '*.sh' -print0 | xargs -0 shellcheck
+
+      - name: Check Commit Messages
+        run: |
+          echo "Validating commit messages"
+          # Customize this script to your commit message standards
+          if ! git log -1 --pretty=%B | grep -Eq '^(feat|fix|chore|docs|style|refactor|test|perf):'; then
+            echo "Commit message does not follow the conventional format: <type>: <subject>"
+            exit 1
+          fi
+