Reset all migration and refactor db buckets

[IronGauntlets]

Juno has 16 migrations most of which have been applied by the users due to upgrades to the Starknet versions. Therefore, it doesn't make sense to still have the migration code in the repository.

All the migrations should be deleted while the DB buckets can refactored (namely the Unsed and Temporary (if possible)). This change would require the creation of new snapshots or resyncing from scratch.