Add MinIO Support for File Uploads in Admin and User Feeds (GSoC 2024)

[chandel-aman]

Is your feature request related to a problem? Please describe.
Current file operations for admin and user feed management require updates to support MinIO as the storage solution.

Describe the solution you'd like
Proposed Solution

1. Enable full CRUD (Create, Read, Update, Delete) functionality for admin and user feed management.
2. Integrate MinIO services to handle file creation and deletion.
3. Update models, such as Post and File, to accommodate file-related changes.
4. Revise existing mutations and queries to reflect these updates.

Additional context
This update is part of GSoC 2024, Improve file uploads and security.

[chandel-aman]

@aashimawadhwa please assign