Add a GitHub Action to look for typos and lint Python code (#72)

* Add a GitHub Action to look for typos and lint Python code

* Update ci.yml

Author: cclauss

.github/workflows/ci.yml

@@ -0,0 +1,18 @@
+# This Action uses minimal steps to run in ~5 seconds to rapidly:
+# look for typos in the codebase using codespell, and
+# lint Python code using ruff and provide intuitive GitHub Annotations to contributors.
+name: ci
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+jobs:
+  codespell_and_ruff:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: codespell-project/actions-codespell@v2
+    - uses: astral-sh/ruff-action@v3
+    - run: ruff format --diff