Upgrade to binary protocol v2.0

[ifiokjr]

Description

Currently, edgedb-protocol uses the binary protocol 1.0.

For my current project edgedb_codegen I would like access to the enum name for autogenerating shared types and better type checking.

This is available in the binary protocol version 2.0: https://docs.edgedb.com/database/reference/protocol/typedesc.

This can either be as a breaking release or adding the ability to support both protocol versions.

[tiberiusferreira]

Hey, this might already be the case now. @ifiokjr , I added standalone transactions to this fork , then had to fork you repo too: fork to keep using it.

In the process I had to update it too and there were some new protocol entities.

[aljazerzen]

Yes, this has already been implemented.

Closed by #354

(and #360)

And let's open a new issue about "standalone transactions".