Roadmap Updates

[mrego]

The Servo roadmap is published on the wiki: https://github.com/servo/servo/wiki/Roadmap

This is an issue to track changes on that page, if you want to propose a new task or update something there, please leave a comment on this issue. The TSC will review and discuss the comments on this issue in the calls and update the roadmap accordingly.

Proposals format:

• Topic: XXX
• Area: (if you can identify it somehow)
• Description: (1-2 sentences description if needed)
• People: (who has plans to work on it in the coming months)

[gterzian]

As per the last call(at least I think we discussed and agreed to move forward), I have clarified the streams part to mean implementing the whole spec(otherwise we would have already hit the target for 2025 :) ), and I have also added a vague item for my plan to look into implementing support for mini-apps(more details to follow).