Brandon/cre 211 fix agent and task config for yaml based projects (#1211)

* Fixed agents. Now need to fix tasks.

* Add type fixes and fix task decorator

* Clean up logs

* fix more type errors

* Revert back to required

* Undo changes.

* Remove default none for properties that cannot be none

* Clean up comments

* Implement all of Guis feedback

src/crewai/utilities/config.py

@@ -0,0 +1,40 @@
+from typing import Any, Dict, Type
+
+from pydantic import BaseModel
+
+
+def process_config(
+    values: Dict[str, Any], model_class: Type[BaseModel]
+) -> Dict[str, Any]:
+    """
+    Process the config dictionary and update the values accordingly.
+
+    Args:
+        values (Dict[str, Any]): The dictionary of values to update.
+        model_class (Type[BaseModel]): The Pydantic model class to reference for field validation.
+
+    Returns:
+        Dict[str, Any]: The updated values dictionary.
+    """
+    config = values.get("config", {})
+    if not config:
+        return values
+
+    # Copy values from config (originally from YAML) to the model's attributes.
+    # Only copy if the attribute isn't already set, preserving any explicitly defined values.
+    for key, value in config.items():
+        if key not in model_class.model_fields:
+            continue
+        if values.get(key) is not None:
+            continue
+        if isinstance(value, (str, int, float, bool, list)):
+            values[key] = value
+        elif isinstance(value, dict):
+            if isinstance(values.get(key), dict):
+                values[key].update(value)
+            else:
+                values[key] = value
+
+    # Remove the config from values to avoid duplicate processing
+    values.pop("config", None)
+    return values