Added spell checker workflow

.github/workflows/spellcheck.yml

@@ -0,0 +1,28 @@
+name: Spell Check
+
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
+    branches:
+      - '*'
+
+jobs:
+  spell-check:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '20'
+
+      - name: Install cspell
+        run: npm install -g cspell
+
+      - name: Run spell check
+        run: cspell