webaverse.com/{.eth,0x} mode

[avaer]

This issue is for implementing the webaverse/app handling of URLs of the form:

https://app.webaverse.com/eth://0xcontractaddr or https://app.webaverse.com/eth://0xcontractaddr/tokenId or
https://app.webaverse.com/avaer.eth

The resulting page should open the app to a Totum scene with the tokens from the given contract, tokenId, or user id. This can be done by synthesizing an appropriate .scn and loading it up.

The generated scene could use text nodes in the .scn, with HTML/text labeling all of the NFTs in the scene.

[avaer]

This would be a quite quick way to onboard any wallet or show off existing collections with Webaverse tech.

[avaer]

Useful links:

https://github.com/webaverse/totum
https://github.com/webaverse/totum/blob/main/types/scn.js
https://github.com/webaverse/totum/blob/main/type_templates/scn.js

[avaer]

Place where we load the parsed URL:

app/universe.js

Line 17 in 1679f2b

const enterWorld = async worldSpec => {