ci(feat): add cspell workflow

.github/workflows/cspell.yml

@@ -0,0 +1,21 @@
+name: 'Check spelling'
+on: # rebuild any PRs and main branch changes
+  pull_request:
+    branches-ignore:
+      - "dependabot/**"
+  push:
+
+permissions:
+  contents: read
+
+jobs:
+  spellcheck:
+    runs-on: ubuntu-latest
+    if: ${{ github.actor != 'dependabot[bot]' }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: streetsidesoftware/cspell-action@v6
+        with:
+          inline: warning # default
+          incremental_files_only: true # default
+          strict: false