Change the naming scheme for deployments

[lutter]

Right now, indexer-agent deploys subgraphs under the name indexer-agent/<hash> into graph-node. That makes it impossible to use some graph-node features, especially deployment rules to control how deployments are indexed.

The naming scheme should be changed to <subgraph name>/<hash> so that a subgraph might be called user/name/hash. That would make it possible to use name-based rules with graph-node, e.g., to deploy subgraphs that are known to get a lot of queries into a more powerful database shard.

Edited by @tilacog:

• Depends on [Feature] Allow redeployment of grafted subgraphs even if the graft base is not found graph-node#4534.

[tilacog]

Reopening this issue as the changes were reverted by #644