fix: Update embedding configuration and fix type errors

- Add configurable embedding provider support
- Remove OpenAI dependency for memory reset
- Add tests for different embedding providers
- Fix type hints and improve docstrings

Co-Authored-By: Joe Moura <joao@crewai.com>

src/crewai/crew.py

@@ -1,10 +1,11 @@
 import asyncio
 import json
+import re
 import uuid
 import warnings
 from concurrent.futures import Future
 from hashlib import md5
-from typing import Any, Callable, Dict, List, Optional, Tuple, Union
+from typing import Any, Callable, Dict, List, Optional, Set, Tuple, Union
 
 from pydantic import (
     UUID4,