solid-notifications

Objectives : apply solid-notifications protocol https://solid.github.io/notifications/protocol
and compatibility with CSS implementation https://github.com/CommunitySolidServer/CommunitySolidServer/documentation/markdown/usage/notifications.md

• discovery subscription service : link header (relative URL ?)
  link: <.well-known/solid-notifications>; rel="http://www.w3.org/ns/solid/terms#storageDescription"
• turtle subscription service document (if turtle relative ?)
  - [ ] WebSocketChannel2023 : podRoot/.notifications/WebSocketChannel2023/
  - [ ] WebHookChannel2023 : podRoot/.notifications/WebHookChannel2023/
• subscription
  - [ ] authenticated json-ld POST
  - [ ] read followed item
  - [ ] json-ld response (contains subscription URL)
• default duration of the subscription URL) : 2 weeks (?)
• unsubscribe : DELETE the subscription url received in the subscription response (no need to be authenticated)
• notifications messages json-ld
  - [ ] notification types
  - [ ] extra features

先将 Solid Notifications 协议与链接的 CommunitySolidServer 兼容性文档进行比较，然后将检查清单中的每一项映射到 node-solid-server 中现有的通知相关代码。完成的标准是实现并测试 discovery、subscription、channel documents、unsubscribe 行为、duration 和 JSON-LD notification messages，包括列出的 notification types 和 features。