Fix/logger - fix #1412 (#1413)

* improved logger

* log file looks better

* better lines written to log file

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Co-authored-by: João Moura <joaomdmoura@gmail.com>

src/crewai/utilities/file_handler.py

@@ -16,7 +16,7 @@ class FileHandler:
 
     def log(self, **kwargs):
         now = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
-        message = f"{now}: ".join([f"{key}={value}" for key, value in kwargs.items()])
+        message = f"{now}: " + ", ".join([f"{key}=\"{value}\"" for key, value in kwargs.items()]) + "\n"
         with open(self._path, "a", encoding="utf-8") as file:
             file.write(message + "\n")