Frontend: Image Annotation Backend Connection

[umutdenizsenerr]

This PR adds a backend connection for the image annotation feature on our medical experience sharing platform. The annotation structure has been modified to follow W3C standards, and a server-side API has been implemented to handle annotation requests. The frontend code has also been modified to send requests to the API when the user creates annotation.

• Implemented a server-side API for handling annotation requests (create, retrieve)
• Modified the frontend code to send requests to the API when the user creates, an annotation
• Tested the annotation feature to ensure that it is working correctly and that the data is being stored and retrieved correctly from the backend

[BeratDamar]

Our system had imAge annotation without backend conenction. Now, our users shall be able to create and show annotations on a image. I reviewed your implementation. The annotation structure is competible with W3C standards. This is significant part of the annotation implementation. Our backend team created discrete system for annotations as we desire.

You have handled API request in correct way. I also tested your implementation on user side. All functionalities work fine.

As a result, I will merge it. Thanks for your contribution.