Add workflows

.github/workflows/python-black.yml

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+name: Validate Black Formatting
+
+on:
+  workflow_call:
+    inputs:
+      black-version:
+        required: false
+        type: string
+        default: "22.3.0"
+  workflow_dispatch:
+  push:
+    paths:
+      - "**.py"
+
+jobs:
+  format:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - name: Checkout base repo
+        uses: actions/checkout@v3
+
+      - name: Set up Python 3.11
+        uses: actions/setup-python@v2
+        with:
+          python-version: "3.11"
+
+      - name: Install dependencies
+        run: python3 -m pip install black~=${{ inputs.black-version }}
+
+      - name: Check Black formatting
+        run: black --check .

.github/workflows/python-pytest.yml

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+name: Install Requirements and Run Pytest
+
+on:
+  workflow_call:
+    inputs:
+      pytest-version:
+        required: false
+        type: string
+        default: "7.1.2"
+  workflow_dispatch:
+  push:
+    paths:
+      - "**.py"
+
+jobs:
+  validate:
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        python-version: ["3.8", "3.9", "3.10"]
+
+    steps:
+      - name: Checkout base repo
+        uses: actions/checkout@v3
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: |
+          python3 -m pip install --upgrade pip 
+          python3 -m pip install '.[dev]'
+          python3 -m pip install pytest~=${{ inputs.pytest-version }}
+
+      - name: Run pytest
+        run: python -m pytest