feat: add crewai-tools library to workspace

- Migrate crewai-tools as standalone package in lib/tools
- Configure UV workspace for monorepo structure
- Move assets to repository root
- Clean up duplicate README files
- Focus pre-commit hooks on lib/crewai/src only

lib/tools/tests/it/tools/conftest.py

@@ -0,0 +1,21 @@
+import pytest
+
+
+def pytest_configure(config):
+    """Register custom markers."""
+    config.addinivalue_line("markers", "integration: mark test as an integration test")
+    config.addinivalue_line("markers", "asyncio: mark test as an async test")
+
+    # Set the asyncio loop scope through ini configuration
+    config.inicfg["asyncio_mode"] = "auto"
+
+
+@pytest.fixture(scope="function")
+def event_loop():
+    """Create an instance of the default event loop for each test case."""
+    import asyncio
+
+    loop = asyncio.new_event_loop()
+    asyncio.set_event_loop(loop)
+    yield loop
+    loop.close()