Created leapyear.py in Leap_Year_Checker folder

[ghost]

Description

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Fixes #(issue_no)

Replace issue_no in the above line, with the issue related to this PR.

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Documentation Update

Checklist:

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• I have named my files and folder, according to this project's guidelines.
• My code follows the style guidelines of this project.
• My Pull Request has a descriptive title. (not a vague title like Update index.md)
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• I have included a requirements.txt file (if external libraries are required.)
• My changes do not produce any warnings.
• I have added a working sample/screenshot of the script.

[chavarera]

describe more about your code

[ghost]

okay....👍👍 I will make a new pr

[ghost]

Committed Requested Changes

[chavarera]

@Hariom1509 cool 👍