Add workflow for static typing test

.github/workflows/static_typing_check.yml

@@ -0,0 +1,30 @@
+name: Static Typing Check
+
+on:
+  pull_request:
+    branches:
+      - main
+      - sparkx_devel
+
+jobs:
+  static-typing:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.9'
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install mypy==1.10.1
+        pip install -r requirements.txt
+
+    - name: Run mypy
+      run: |
+        mypy src/sparkx --ignore-missing-imports --show-error-codes --disallow-untyped-defs --disallow-untyped-calls