docs: add note about webtransport only supporting dial

[Download]

Title

docs: add note about webtransport only supporting dial

Description

This adds a note at the top of the WebTransport README.md to remind people of the fact that currently, the WebTransport implementation in js-libp2p only supports dialing out to other nodes and does not actually support listening for incoming dials because js-libp2p depends on Node JS and QUIC support has not landed in Node JS yet.

Related https://github.com/libp2p/js-libp2p/issues/2371

Notes & open questions

-

Change checklist

• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation if necessary (this includes comments as well)

[Download]

@achingbrain Ah! Thanks for the feedback! I will close these PRs and create new ones using the method you pointed out. 👍