op-reth: Fix serialization/deserialization for Deposit Receipts

[BrianBland]

• Encode/decode optional Receipt.deposit_nonce field for Deposit transaction receipts
  • Increases the length of the RLP list by 1 element when a deposit nonce is present.
• Ensure that the appropriate RLP length is written for all non-legacy transaction receipts, including Deposits
• Add custom implementation of arbitrary and arbitrary_with for the Receipt type, ensuring that Receipt.deposit_nonce is only Some whenever the transaction type is TxType::DEPOSIT

Open questions:

• Is there a simpler way to define this arbitrary/arbitrary_with strategy leveraging the existing main_codec macro?

Fixes the following tests:

reth-eth-wire types::receipts::ReceiptsTests::proptest