add codespell action

Signed-off-by: Martin Schurz <Martin.Schurz@t-systems.com>

Author: schurzi

.github/workflows/codespell.yml

@@ -0,0 +1,12 @@
+---
+name: Codespell - Spellcheck
+
+on:  # yamllint disable-line rule:truthy
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  codespell:
+    uses: "dev-sec/.github/.github/workflows/codespell.yml@main"