feat: add s3 provider to files API

Signed-off-by: Sébastien Han <seb@redhat.com>

tests/integration/files/conftest.py

@@ -0,0 +1,38 @@
+from typing import AsyncGenerator
+
+import pytest
+
+from llama_stack.providers.remote.files.object.s3.config import S3FilesImplConfig
+from llama_stack.providers.remote.files.object.s3.s3_files import S3FilesAdapter
+from llama_stack.providers.utils.kvstore import KVStore, kvstore_impl
+from llama_stack.providers.utils.kvstore.config import SqliteKVStoreConfig
+
+
+@pytest.fixture
+def s3_config():
+    """Create S3 configuration for MinIO."""
+    return S3FilesImplConfig(
+        aws_access_key_id="ROOTNAME",
+        aws_secret_access_key="CHANGEME123",
+        region_name="us-east-1",
+        endpoint_url="http://localhost:9000",
+    )
+
+
+@pytest.fixture
+async def kvstore() -> AsyncGenerator[KVStore, None]:
+    """Create a SQLite KV store for testing."""
+    config = SqliteKVStoreConfig(
+        path=":memory:"  # Use in-memory SQLite for tests
+    )
+    store = await kvstore_impl(config)
+    await store.initialize()
+    yield store
+
+
+@pytest.fixture
+async def s3_files(s3_config, kvstore) -> AsyncGenerator[S3FilesAdapter, None]:
+    """Create S3FilesAdapter instance for testing."""
+    adapter = S3FilesAdapter(s3_config, kvstore)
+    await adapter.initialize()
+    yield adapter