PRs and logistical steps for Indexer migration

[andygolay]

For the indexer migration, we have a couple draft PRs for the movement repo:

• feat: implement indexer processors v2 #1264 (@andygolay )
• expeirmetn: migrate processors from v1 to v2. #1275 (@larryl3u)

I'm wondering whether this approach makes sense, because as @musitdev pointed out in a comment on 1264, and as I'm seeing when testing 1275, there are certain incompatibilities with the Movement node. Philippe has advised to

Start an Aptos node, then load a movement db with some tx then you can test the indexer v2.

This to me makes the most sense... I've only been able to do this using aptos-core (main or l1-migration branch, not the movement repo.

I could be incorrect and maybe there is a convenient way to run an Aptos node from the movement repo? But from what I can tell the best approach logistically may be instead of working with the movement repo:

1. Work with @radupopa369 when he is ready to set up the indexer infra, to implement, review and test IaC and/or whatever infra is needed to support the indexer.
2. For easier deployment, run each processor as its own binary rather than one binary wrapping all the processors as they are currently structured.
3. Timing-wise, as each network (devnet, testnet, then mainnet) migrate, and then implement the V2 processors (and potentially Hasura v3 as @radupopa369 has mentioned iirc? However I'm seeing complaints about Hasura V3 here... not sure what the best option is for a GraphQL GUI).

The main reason for proposing this strategy, of deploying individual V2 processors alongside each post-l1 migration Aptos node, is because we've shown that it works (for one approach using a transaction stream service, see these notes), and the old Movement node doesn't appear to be compatible with the V2 indexers... so, it is proposed here to wait until each network (starting with devnet) upgrades to an Aptos node and then implement the V2 processors in the instance for the node, running each processor with its own binary.

[andygolay]

After creating this discussion, Radu mentioned he'll be working on the IaC and he just needs a working example with docker-compose. I've created an issue for it here: #1277