[Refactor]: Files Name

[sepandhaghighi]

Describe the feature you want to add

Change the files name in a manner similar to this:

1. reserver_errors.py --> errors.py
2. reserver_func.py --> functions.py
3. reserver_obj.py --> uploader.py
4. reserver_param.py --> params.py
5. util.py --> utils.py

Describe your proposed solution

No response

Describe alternatives you've considered, if relevant

No response

Additional context

No response