[pool/builder] Track builder addresses via chain tracking

[dancoombs]

Describe the feature
Builders currently wait for new block updates and then issue a few RPC calls to determine if one of their own transactions has been mined.

Instead, we could have the builders register their addresses with the pool in their block subscription call. The pool can then track those addresses for transactions alongside the rest of its chain tracking logic. It can then send any receipts alongside the new block update that it sends via the block subscription.

[dancoombs]

We could consider expanding this feature out to all aspects of rundler that have per-block updates. Fee updates come to mind. This would ensure that the pool and the builder have the same view of the chain.