feat: add ovm BlockFileCodec (#12247)

Co-authored-by: Emilia Hane <elsaemiliaevahane@gmail.com>

crates/optimism/cli/src/lib.rs

@@ -27,6 +27,11 @@ pub mod commands;
 /// made for op-erigon's import needs).
 pub mod receipt_file_codec;
 
+/// OVM block, same as EVM block at bedrock, except for signature of deposit transaction
+/// not having a signature back then.
+/// Enables decoding and encoding `Block` types within file contexts.
+pub mod ovm_file_codec;
+
 pub use commands::{import::ImportOpCommand, import_receipts::ImportReceiptsOpCommand};
 use reth_optimism_chainspec::OpChainSpec;