Update fetch vaults query performance

[findolor]

Chained PR

• Update fetch orders query performance  #2304

Motivation

Just like the orders query we needed to update the fetch_calls query to execute everything in a single database call. This PR aims to improve the query performance by adding that.

Solution

• Move local_db related vault logic to be under local_db directory
• Remove the unused fetch_vault query
• Update fetch_vaults query to accept a list of chain ids and orderbook addresses
• Update Vault balance changes query fix the missing row issue
• Move and update tests

Checks

By submitting this for review, I'm confirming I've done the following:

• made this PR as small as possible
• unit-tested any new functionality
• linked any relevant issues or PRs
• included screenshots (if this involves a front-end change)

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch local-db-vaults-query

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