Feature Request: HTTP/2 Support

[fsteff]

Describe the feature

Subscribing to a topic via Long-lived (SSE) GET requests keeps a connection to the server open, but with HTTP/1.1 most browsers limit the number of simultaneous connections to 6 (overall, not even per tab!). With HTTP/2 this should no longer be a problem.

However, the utilized webserver tide does NOT support HTTP/2 (http-rs/tide#891).
As a result, the number of concurrent subscriptions is limited to 6, additional requests (also other ones) stop working.

Since HTTP/2 support is not planned for tide (for now only receives small maintance updates, see http-rs/tide#888), please consider switching to a webserver that supports it.

[fsteff]

Sorry, wrong repo... I meant to create an issue for the REST-plugin, which is located in the main zenoh repository.
I opened this one: eclipse-zenoh/zenoh#1313