chore: GHA basic configuration

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+---
+github: [yaal-coop]

.github/workflows/tests.yaml

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+---
+name: tests
+on:
+  push:
+    branches:
+      - main
+      - '*.*.*'
+  pull_request:
+    branches:
+      - main
+      - '*.*.*'
+
+jobs:
+  tests:
+    name: ${{ matrix.python }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python:
+          - '3.12'
+          - '3.11'
+          - '3.10'
+          - '3.9'
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python }}
+          cache: 'poetry'
+      - name: Install dependencies and run tests
+        run: |
+          poetry --version
+          poetry install
+          poetry run pytest --showlocals
+
+  minversions:
+    name: minimum dependency versions
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.9'
+          cache: 'poetry'
+      - run: sed -i -E 's/"(\^|>=)([0-9\.]+)([^,]*)"/"==\2"/' pyproject.toml
+      - run: sed -i -E 's/python = "==/python = "^/' pyproject.toml
+      - name: Install dependencies and run tests
+        run: |
+          poetry --version
+          poetry lock
+          poetry install
+          poetry run pytest --showlocals
+
+  style:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: pre-commit/[email protected]