Db schema migration to public schema

[Kartiiyer12]

Currently on the database side, schema is created based on the network you are running - mainnet, preprod or preview. This separation is needed and we can one the db on a default public schema.

When making this change, we need to check -

• If db migration can be done with scripts, without needing to re-sync from scratch.
• It needs to be tested for rollback conditions if migration is stopped/breaks in-between
• This can wait till we want to change the db schema majorly due to big breaking changes needing to re-sync from genesis,