chore: add code spell

Signed-off-by: David Ko <dko@suse.com>

.codespellignore

@@ -0,0 +1,5 @@
+aks
+ec2
+eks
+gce
+gcp

.github/workflows/codespell.yml

@@ -0,0 +1,23 @@
+name: Codespell
+
+on:
+  push:
+  pull_request:
+    branches:
+    - master
+    - "v*.*.*"
+
+jobs:
+  codespell:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+    - name: Check code spell
+      uses: codespell-project/actions-codespell@v1
+      with:
+        check_filenames: true
+        ignore_words_file: .codespellignore
+        skip: "*/**.yaml,*/**.yml,*/**.tpl,./deploy,./dev,./scripts,./uninstall"