Make CI lint once

.github/workflows/validate-branch.yaml

@@ -0,0 +1,62 @@
+name: Validate
+on: [ push ]
+
+jobs:
+  lint:
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: [ '3.8' ] # use minimum supported version
+        os: [ ubuntu-latest ]
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install poetry
+        run: pip install poetry
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: 'poetry'
+      - name: Install dependencies
+        run: poetry install
+      - name: Run lint
+        run: make lint
+  build-docs:
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: [ '3.11' ]
+        os: [ ubuntu-latest ]
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: 'pip'
+      - name: Install dependencies
+        run: pip install -r docs/requirements.txt
+      - name: Run building docs
+        run: make build-docs
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: [ '3.8', '3.9', '3.10', '3.11', '3.12' ]
+        os: [ ubuntu-latest ]
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install poetry
+        run: pip install poetry
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: 'poetry'
+      - name: Install dependencies
+        run: poetry install
+      - name: Run test
+        run: make test