chore: Initialize basic integration test

.github/workflows/integration.yml

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+name: Integration
+
+on:
+  workflow_dispatch:
+  pull_request:
+
+jobs:
+  test:
+    name: Integration
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:17
+        env:
+          POSTGRES_USER: keystone
+          POSTGRES_PASSWORD: '1234'
+        ports:
+          - 5432:5432
+        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install necessary python packages
+        run: pip install keystone uwsgi psycopg2
+
+      - name: Prepare keystone config file
+        env:
+          store_id: ${{ steps.store.outputs.store_id }}
+          model_id: ${{ steps.store.outputs.model_id }}
+        run: |
+          mkdir -p etc
+          echo "[database]" >> etc/keystone.conf
+          echo "connection = postgresql://keystone:1234@127.0.0.1:5432/keystone" >> etc/keystone.conf
+          echo "[fernet_receipts]" >> etc/keystone.conf
+          echo "key_repository = $(pwd)/etc/fernet" >> etc/keystone.conf
+          echo "[fernet_tokens]" >> etc/keystone.conf
+          echo "key_repository = $(pwd)/etc/fernet" >> etc/keystone.conf
+          cat etc/keystone.conf
+
+      - name: Init keystone
+        run: |
+          mkdir -p etc/fernet
+          keystone-manage --config-file etc/keystone.conf db_sync
+          keystone-manage --config-file etc/keystone.conf fernet_setup
+          keystone-manage --config-file etc/keystone.conf bootstrap --bootstrap-password password

tools/keystone_bench_fernet.py

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+from pathlib import Path
+import pytest
+import tempfile
+
+from keystone.token.providers.fernet.core import Provider
+import keystone.conf
+from keystone.conf import configure
+
+CONF = keystone.conf.CONF
+
+@pytest.fixture(scope="session", autouse=True)
+def execute_before_any_test():
+    configure(CONF)
+
+
+def test_fenet_token_python(benchmark):
+    key_repo = tempfile.TemporaryDirectory()
+    CONF.set_override("key_repository", key_repo.name, "fernet_tokens")
+    with open(Path(key_repo.name, "0"), "w") as fp:
+        fp.write("3HgVBYzXMJYSr-5hxYI5lvmXK9-UjwQNwQYnKlA3-aA=")
+        fp.flush()
+    with open(Path(key_repo.name, "1"), "w") as fp:
+        fp.write("BFTs1CIVIBLTP4GOrQ26VETrJ7Zwz1O4wbEcCQ966eM=")
+        fp.flush()
+
+    fernet = Provider()
+    token = "gAAAAABnt1rtv0ROracU_8Iqyf5wIN5R4bo7Enk1P_KQeLtiC8bC4_qvCj9PzBOq1EHflF20aYYJq2dVDoy9hBxM23ua79YVjCd1BnjN8Mxz5ZG0-kYfEJPytVydWqKPG9p5V5eQ5H0ztsxJJZFG6qQHRDBUrk_SuKox8aVddX38Oa5Nx7wCGnA"
+
+    token = benchmark(lambda: fernet.validate_token(token))
+
+    assert token == (
+        '4b7d364ad87d400bbd91798e3c15e9c2',
+        ['external'],
+        ['FL7FbzBKQsK115_4TyyiIw'],
+        None,
+        None,
+        '97cd761d581b485792a4afc8cc6a998d',
+        None,
+        None,
+        None,
+        None,
+        None,
+        None,
+        None,
+        '2025-02-20T16:40:13.000000Z',
+        '2025-02-20T17:40:13.000000Z',
+    )