Add project tools and contributing guidelines (#281)

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: ci
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.10", "3.11"]
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install poetry
+        run: pip install poetry==1.4.2
+      - name: Install dependencies
+        run: poetry install --all-extras
+      - name: Lint with ruff
+        run: poetry run ruff embedchain examples
+      - name: Test with pytest
+        run: poetry run pytest