2dcl - DCL's 2D Alternate Universe: Deployment and Discovery

Following the release of [2dcl](https://2dcl.org), we are want to continue its development. Here are the features we'll work on:

## Simplified Scene Upload Build an integrated authentication and signing workflow. remove the dependency on the SDK CLI.

## Enhanced Content Discovery Build an online database that with the scenes deployed to 2dcl. This will be accessible online and from the client.

## Streamlined Login We will implement a MetaMask login workflow, thereby eliminating the need for config file editing.

## Talking to others Support meeting other players and enable chatting with them. This will involve implementing the comms endpoints in our catalyst client library, and we will leverage Worlds for this feature as well.