AC: Collaboration Engine - Fusion support

[Peppe]

Description

Enable using Collaboration Engine in applications that are built with Vaadin Fusion (TypeScript views). Today Collaboration Engine supports Flow applications (Java views)

User stories

As a developer I want CE to have fusion APIs So that I can use CE in my Fusion app

Acceptance criteria

• [ ] Collaboration Engine is available in Fusion applications
• [ ] You can have collaborative forms with a shared state and highlights on who is editing what in a Fusion TypeScript view. (CollaborationBinder)
• [ ] You can have a avatargroup that is automatically updated when a user enters or leaves a topic in a Fusion TypeScript view. (CollaborationAvatarGroup)
• [ ] You can have a real-time or asynchronous comments which messages can be persisted over server restarts (CollaborationMessageList/CollaborationMessageInput)

General criteria

• [ ] APIs reviewed

• [ ] Design

• [ ] Performance

• [ ] UX/DX tests in Alpha

• [ ] Documentation:

• [ ] How to test?

• [ ] Limitations: