fix(Pose): remove config_file from class property

[ttngu207]

Summary by CodeRabbit

• Refactor: Updated the handling of configuration files in aeon/io/reader.py. The config_file is no longer a class property and is now passed as a parameter to the methods get_class_names, get_bodyparts, and class_int2str. This change enhances the flexibility and maintainability of the code. Please note, this may impact the external interface or behavior of the code if these methods are used externally.

[github-actions[bot]]

CodeRabbit

Walkthrough

The proposed changes primarily focus on the handling of configuration files within the Reader class in the aeon/io/reader.py file. The config_file class property has been removed and instead, it is passed as a parameter to several methods. This modification enhances modularity and maintainability by reducing the reliance on shared state.

Changes

File	Summary
aeon/io/reader.py	Removed the config_file class property and passed it as a parameter to the get_class_names, get_bodyparts, and class_int2str methods. This change improves modularity and maintainability but may impact the external interface or behavior of the code.

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[jkbhagatio]

Actually this is good as is, so will merge like this