Add codespell for current/future events (#249)

Co-authored-by: Oliver Ruebel <[email protected]>

.codespellrc

@@ -0,0 +1,6 @@
+[codespell]
+skip = .git,*.pdf,*.svg,*_201[789]*,*_2020*
+# embedded in ipynb images
+ignore-regex = '^\s*"image/\S+": ".*'
+#
+# ignore-words-list =

.github/workflows/codespell.yml

@@ -0,0 +1,22 @@
+---
+name: Codespell
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  codespell:
+    name: Check for spelling errors
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Codespell
+        uses: codespell-project/actions-codespell@v2