fix(Attachment): Make get attachment endpoints consistent, allow to update project/component/release with attachment data

[hoangnt2]

Issue:

1. Currently, there are two formats when fetching attachments for a project, component, or release

• For projects and releases:

{
    "_embedded": {
          "sw360:attachments": [....]
    }
}

• For components:

{
    "_embedded": {
         "sw360:attachmentDTOes": [....]
    }
}

2. Additionally, project/release attachments cannot be updated when calling the patch project/release endpoint.

=> These two issues make it difficult for us to create a common component for listing and editing attachments in the new front-end

This PR does:

1. Make get attachment endpoints response format consistent
2. Allow patching a project/component/release with attachment data (in a consistent way)
3. Remove AttachmentDTO class

How To Test?

1.Make get attachment endpoints response format consistent

• Method: GET

• Url:
  - Project attachments: http://{ip}:8080/resource/api/projects/{project_id}/attachments
  - Component attachments: http://{ip}:8080/resource/api/components/{component_id}/attachments
  - Release attachments: http://{ip}:8080/resource/api/releases/{release_id}/attachments

• Expected output:

{
    "_embedded": {
          "sw360:attachments": [....]
    }
}

2.Update project/component/response

• Method: PATCH

• Url:
  - Update project : http://{ip}:8080/resource/api/projects/{project_id}/
  - Update component: http://{ip}:8080/resource/api/components/{component_id}/attachments
  - Update release: http://{ip}:8080/resource/api/releases/{release_id}/attachments

• Body:

{
    "attachments": [
         {
          "attachmentContentId": "${attachment_content_id}",
          "filename": "${file_name}",
          "attachmentType": "SOURCE",
          "createdBy": "[email protected]",
          "createdTeam": "DEPARTMENT1",
          "createdComment": "",
          "createdOn": "2025-02-06",
          "checkedBy": "[email protected]"
       }
    ]
}

• Expected output: Update success with status code = 200

[heliocastro]

LGTM