Gnodev to power portal loop(s)

[moul]

We should replace the current custom portal loop implementation with gnodev.

Gnodev should be user-friendly for those who want to showcase a preview of their work, including:

• Us, the core team -> gno.land
• Berty -> gno.berty.io
• And others

Essentially, running gnodev with no arguments starts a default local-only server with development-friendly options, such as auto-reload and an in-memory store.

In contrast, gnodev staging or gnodev --various --flags --to --customize --it allows for running a portal loop in staging mode. This setup will feature a persistent store instead of an in-memory one, disable file system watching for auto-reload, and ensure that replayable transactions are stored in a format suitable for a Git repository, ideally in jsonl format.

cc @gfanton. But I believe this is a great opportunity to open this tool to more hands and minds. Is anyone interested in starting to improve gnodev?