Automate checkpoint generation

[LesnyRumcajs]

          > I like it. It does seem to me, given this guide, that we don't meatbag assistance here anymore; this could be fully automated with a cron workflow, right?

Yes, it could be fully automated. Someone should go automate it. :)

Originally posted by @lemmih in #3263 (comment)

Let's have a cron workflow that does the steps listed in the linked PR and proposes changes on a regular basis.

[hanabi1224]

Do the long-running forest nodes expose their RPC API publicly? I guess it would simplify the process a lot by making RPC calls to the long-running nodes

[lemmih]

Do the long-running forest nodes expose their RPC API publicly? I guess it would simplify the process a lot by making RPC calls to the long-running nodes

I think you wrote this comment in the wrong issue.

[hanabi1224]

I think you wrote this comment in the wrong issue.

I thought we could avoid downloading the mainnet snapshot by querying a running node. But it looks like the checkpoint functionality has been moved out of daemon so I guess downloading a snapshot is required

[LesnyRumcajs]

I believe we could query, e.g., glif public RPC node.

[LesnyRumcajs]

Might need to do post-processing tool in forest-tool shed