feat: added support for MinIO object store, fixed CONTRIBUTING.md and setup script

[Sidd-77]

Description

• Issue Fix: Resolved issue Suppoeting Minio object storage for self hosting Impler #743 by adding support for Minio object storage, enabling self-hosting for Impler.
• Documentation Update: Revised CONTRIUTING.md to reflect the latest guidelines and processes.
• Setup Script Fix: Updated and corrected the setup script to ensure a correct setup of the web part.

Details

• Integrated Minio as an alternative object storage solution for those who prefer or require self-hosting options. Adjusted the configuration and ensured compatibility with existing workflows.
• Made several improvements to the CONTRIBUTING.md file, including clearer instructions and updated requirements, making it easier for new contributors to get started.
• Fixed issues in the setup script that were causing errors during initial setup. This should improve the setup experience and reduce friction for new developers.

Testing

• Verified that Minio integrates seamlessly with the existing setup and that all relevant functionalities are working as expected.
• Tested the revised setup script on multiple environments to ensure consistent and error-free setup.
• Reviewed the updated CONTRIBUTING.md with a new contributor to ensure clarity and completeness.

Resolves #743

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[chavda-bhavik]

@Sidd-77 You're contribution is awesome. Added two comments, please have a look.

I'm very excited to make it live.