refactor: change to package with src layout

[Abdur-rahmaanJ]

Change to src layout

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Description

Project now works as a package with src layout

Motivation and Context

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Easier maintainance

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How Has This Been Tested?

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Screenshots (if appropriate):

Types of changes

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (improves application but is not new functionality nor a bug fix)

Checklist:

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• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.