Add spellcheck

Author: andre-dietrich

.github/workflows/spell-check.yaml

@@ -0,0 +1,17 @@
+name: Spell Check
+
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+jobs:
+  spell-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Run cspell Action on Markdown files
+        uses: cspell/cspell-action@v1
+        with:
+          files: '**/*.md'
+          languages: 'en-US'