feat: Deletion of resources on AWS S3

[ElenaStamenkovskaCC]

What Changed?

• This PR introduces deletion of media info. It clears the resource on Aws S3 Bucket storage.

Why?

• Previously, the system lacked a mechanism to synchronize database state with cloud storage during deletion. This resulted in "orphaned" files occupying space in the AWS S3 bucket. By introducing the delete-file/{id} endpoint, we ensure a full lifecycle cleanup of resources, reducing storage overhead and maintaining data consistency.

Closes #334

Type of Change

• ✨ New feature (adds new functionality without breaking existing features)

How Did You Test This?

• Triggered the DELETE endpoint via Swagger UI to verify the end-to-end flow from the API layer to AWS.
• Manually inspected the AWS Management Console to confirm the physical object was successfully removed from the S3 bucket.

What I tested:

• [ ]
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How to test it:

Review Checklist

• My code follows the project's style and conventions
• I've reviewed my own code for obvious issues
• I've added comments where the code might be confusing
• I've updated relevant documentation (if needed)
• I've tested my changes and they work as expected

Screenshots / Additional Context