Adding lint action

.github/workflows/lint.yaml

@@ -0,0 +1,25 @@
+name: push
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+
+      - name: Setup environment
+        uses: actions/setup-python@v3
+        with:
+          python-version: 3.11
+
+      - name: Install dependencies
+        run: |
+          python -m pip install flit
+          flit install --deps=develop --only-deps
+
+      - name: Analysing the code
+        run: |
+          mypy --install-types trueseeing; mypy trueseeing
+          pflake8 trueseeing