Implement Service-Agnostic Storage Context

[iammuho]

The objective of this task is to design and implement a service-agnostic context for the storage system. Utilizing a factory pattern, the goal is to create a system flexible enough to adapt to various storage solutions (such as AWS S3, Google Cloud Storage, local filesystem, etc.) without affecting the existing application layers.

Tasks:

• Define a Storage interface that includes essential methods for storage operations like Upload, Download, Delete, List, etc.
• Implement a factory pattern to generate instances of the appropriate storage service provider, based on configuration or runtime requirements.
• Create a basic initial implementation using a placeholder or dummy storage service that complies with the defined interface.
• Integrate this factory and interface into the existing storage service codebase.
• Write unit tests to verify the correct behavior of the service-agnostic storage context.

Acceptance Criteria:

• The storage service must be capable of interacting with multiple storage service providers without requiring modifications to the internal application layers.
• Unit tests should validate that the new implementation works as expected, adhering to the defined interface.