Add mypy checking to CI

Author: virtuald

.github/workflows/dist.yml

@@ -17,3 +17,18 @@ jobs:
     secrets:
       META_REPO_ACCESS_TOKEN: ${{ secrets.REPO_ACCESS_TOKEN }}
       PYPI_API_TOKEN: ${{ secrets.PYPI_PASSWORD }}
+
+  check-mypy:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v4
+      with:
+        python-version: "3.12"
+    - name: Install requirements
+      run: |
+        pip --disable-pip-version-check install mypy setuptools
+        pip --disable-pip-version-check install --no-build-isolation -e .
+    - name: Run mypy
+      run: |
+        mypy commands2