sweep: Create GitHub Actions workflow

.github/workflows/main.yml

@@ -0,0 +1,26 @@
+name: CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Python 3.10
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.10
+
+    - name: Install Poetry
+      run: |
+        curl -sSL https://install.python-poetry.org | python3 -
+
+    - name: Install dependencies
+      run: |
+        poetry install
+
+    # Add steps to run tests or linters if they exist in the project