Test out github actions

Add a workflow to test

.github/workflows/default.yml

@@ -0,0 +1,46 @@
+# This workflow will install Python dependencies, run tests and lint with a single version of Python
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+
+name: Default CI/CD
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+   runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: [3.6, 3.7, 3.8, 3.9]
+        exclude:
+          - os: macos-latest
+            python-version: [3.6, 3.7]
+          - os: windows-latest
+            python-version: [3.6, 3.7]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt -r requirements-extra.txt
+    - name: Lint with flake8
+      run: |
+        flake8 .
+    - name: Check format with black
+      run: |
+        black .
+    - name: Build python modules
+      run: |
+        python build.py --modules
+    - name: Run tests
+      run: |
+        pytest core hscommon