feat(l2): add prover benchmarks from L1 RPC downloaded blocks (#1705)

**Motivation**

We want to benchmark our block prover against other solutions, using
Ethereum mainnet/testnet blocks. For this we need to fetch state from an
Ethereum chain.

**Description**

- adds `l2/prover/bench` crate
- adds state fetching functions from the JSON-RPC API (account, block,
storage, proofs)
- adds a `RpcDB` type to download and cache needed state during block
execution
- adds an `execute()` function to the `Prover` type

Some bugs were discovered while testing execution of blocks:
- fixes state verification (via state and storage MPTs), `verify_db()`
- fixes withdrawals not being processed when using `ExecutionDB`
- fixes beacon root call state changes not being comitted when using
`ExecutionDB`
- fixes serialization errors in SP1 caused by the `requests_hash` field
of a block header

---------

Co-authored-by: Mario Rugiero <[email protected]>
Co-authored-by: fborello-lambda <[email protected]>
Co-authored-by: Javier Chatruc <[email protected]>
Co-authored-by: ilitteri <[email protected]>

Author: 5 people

.github/workflows/ci_l1.yaml

@@ -42,7 +42,7 @@ jobs:
 
       - name: Run cargo clippy
         run: |
-          cargo clippy --all-targets --all-features --workspace --exclude ethrex-prover -- -D warnings
+          cargo clippy --all-targets --all-features --workspace --exclude ethrex-prover --exclude ethrex-prover-bench -- -D warnings
 
       - name: Run cargo fmt
         run: |