Add performance decorator for function metrics

[Emine0010]

This decorator tracks execution time, memory usage, and call count for functions.

Describe your changes

Checklist

• I have read the [CONTRIBUTING]
• I have performed a self-review of my own code
• I have run the code locally and it works as expected
• I have commented my code, particularly in hard-to-understand areas

Screenshots (if appropriate)

[canbula]

Don't use functools and remove the global assignments.