add mypy workflow

.github/workflows/mypy.yml

@@ -0,0 +1,25 @@
+name: Static Analysis
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+jobs:
+  Test-CLI:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.11"]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install WSInfer-CLI
+        run: |
+          python -m pip install --upgrade pip setuptools wheel
+          python -m pip install torch torchvision --extra-index-url https://download.pytorch.org/whl/cpu
+          python -m pip install .[dev] mypy
+      - name: Run mypy
+        run: python -m mypy --install-types --non-interactive wsinfer_mil