[Feature] Copy a subgraph at specific block height

Description

Copying a subgraph at a specific block height would allow for an elegant alternative to rewinds when a divergence is identified in a subgraph.

Proposed workflow
1 - Identify divergence point N
2 - copy subgraph at block height N
3 - Allow graph-node to fully sync the copy
4 - Verify that the divervence is resolved
5 - use graphman copy activate to gracefully direct traffic to the corrected subgraph

Are you aware of any blockers that must be resolved before implementing this feature? If so, which? Link to any relevant GitHub issues.

No response

Some information to help us out

• Tick this box if you plan on implementing this feature yourself.
• I have searched the issue tracker to make sure this issue is not a duplicate.

Inizia dall’entry point esistente graphman copy activate e traccia come vengono rappresentate e sincronizzate le copie dei subgraph. Definisci come una copia all’altezza del blocco N viene creata, sincronizzata completamente, verificata e attivata senza dipendere da un rewind; il lavoro è completato quando il workflow proposto funziona end-to-end.