👷 Add ShellCheck workflow (#77)

Co-authored-by: Rychart Redwerkz <redwerkz@users.noreply.github.com>

.github/workflows/ci.yml

@@ -0,0 +1,17 @@
+name: CI 🤖
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  shellcheck:
+    name: Shellcheck 🐚
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository 📥
+        uses: actions/checkout@v4
+
+      - name: Run ShellCheck ✅
+        uses: ludeeus/action-shellcheck@2.0.0