Upstream features to eigenda-client

[samlaf]

I noticed there's some stuff we're dealing with inside the eigenda-proxy which should be in the eigenda-client. Thinking we should upstream them to eigenda-client to keep the da-proxy's logic only server functionality focused. Features that could be upstreamed:

• wait for confirmation depth (eigenda-client only has wait for finality or don't wait at all, and we implement logic to wait for n number of blocks for confirmation. shouldn't this be part of eigenda-client?)
• we do batch verification inside eigenda-proxy. shouldn't this be part of eigenda-client like kzg verification?

There's prob more, but this is what I can think of right now.

Tasks

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1. upstream to eigenda-core: waiting for confirmation depth/finalization #187
   eigenda-proxy refactor +2
   

[litt3]

Remaining work is captured in Layr-Labs/eigenda#1000