NF: Add keyword_only decorator to enforce keyword-only arguments

[WassCodeur]

Description:

Added @keyword_only decorator to enforce keyword-only arguments in project functions.

Modification details:

• Creation of the @keyword_only decorator to ensure that functions can only be called with arguments specified solely by keyword.
• Full documentation of the new decorator, including usage examples and explanations of how it works.
• Added unit tests to ensure proper operation of the new decorator.

This contribution represents the first step towards applying the @keyword_only decorator to the appropriate functions in the project. Current modifications include the creation of the decorator, associated documentation and unit tests. The next step will be to identify and apply the decorator to relevant functions throughout the project.

[pep8speaks]

Hello @WassCodeur, thank you for submitting the Pull Request!

• In the file fury/decorators.py:

Line 109:80: E501 line too long (83 > 79 characters)

To test for issues locally, pip install flake8 and then run flake8 fury.