feat: Add a function for checking the operating time of a function

[Kangwhi-Kim]

Summary

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• Add a function for checking the operating time of a function

Changes

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• Add a timeit.py function to the onebone/utils/ directory.

How to Test?

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• The timeit function is decorator function as follow;

Checklist

• [x] Do you pass all the tests?
• [ ] Do you write the changes on document such as README?

[Kangwhi-Kim]

브랜치 설정을 잘못하여 close 후 다시 PR하겠습니다.

[Kangwhi-Kim]

재 PR: https://github.com/Onepredict/onebone/pull/58