add build-and-test workflow and related files

.coveragerc

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+[report]
+show_missing = True
+
+[run]
+disable_warnings = include-ignored
+include = */abl/*
+omit =
+	*/abl/__init__.py

.github/workflows/build-and-test.yaml

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+name: ABL-Package-CI
+
+on:
+  push:
+    branches: [ main, Dev ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+        python-version: [3.8, 3.9]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Display python version
+      run: python -c "import sys; print(sys.version)"
+    - name: Install package dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r ./requirements.txt
+    - name: Run tests
+      run: |
+        pytest --cov-config=.coveragerc --cov-report=xml --cov=abl ./tests 
+    - name: Publish code coverage
+      uses: codecov/codecov-action@v1
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        file: ./coverage.xml

requirements.txt

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+numpy
+pyswip==0.2.9
+pytest-cov
+torch
+torchvision
+torchaudio