add spellcheckers

.github/workflows/spellcheck.yml

@@ -0,0 +1,21 @@
+name: spellcheck
+
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+jobs:
+  codespell:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: codespell-project/actions-codespell@v2
+        with:
+          check_filenames: true
+
+  typos:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: crate-ci/typos@master