[ci] Setup Github actions to run 'build_examples.py' as a test on each pull/pull request. (#34)

Co-authored-by: Florian Pigorsch <florian@concept.de>

.github/workflows/main.yml

@@ -0,0 +1,25 @@
+name: Create Examples
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [3.7, 3.8]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Setup Graphviz
+      uses: ts-graphviz/setup-graphviz@v1
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install .
+    - name: Create Examples
+      run: PYTHONPATH=$(pwd)/src:$PYTHONPATH cd src/wireviz/ && python build_examples.py