Fix logging types to bool (#1051)

* fixes pydantic validations hierarchical

* more tests

* logger logs everything or not

* verbose rm levels to bool

* updated readme verbose levels

docs/core-concepts/Tools.md

@@ -84,7 +84,7 @@ write = Task(
 crew = Crew(
     agents=[researcher, writer],
     tasks=[research, write],
-    verbose=2
+    verbose=True
 )
 
 # Execute tasks