op-program: Re-add caching wrapper to oracles.

[ajsutton]

Description

The caching wrapper for oracles had been lost as part of changes to fault proof client startup. Re-add them and increase the l2 block cache size so it covers the likely number of L1 block it has to walk back to as part of resetting the derivation pipeline.

The numbers don't have to be perfect - the current numbers were checked by running a verification against Goerli. Even when replaying 2000 blocks it was only the l2 block cache limit that was hit because of that initial walk back. Other caches seem to be a reasonable size (not too big to cause memory issues but big enough to not have to evict items in normal cases).

Also found some of the old setup code that was no longer used so deleted it.

Metadata

• Fixes https://linear.app/optimism/issue/CLI-3837/fpp-review-cache-sizes

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