Feat: Workflow for closing Old PRs

[Asymtode712]

Describe the feature

This feature aims to automate the management of open PRs in a repository, ensuring that outdated or abandoned PRs are closed in a timely manner. By doing so, it helps maintain repository hygiene, improves workflow efficiency, and provides a better experience for both maintainers and contributors.

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[Asymtode712]

@nikhil25803 please assign me this issue