hoist BlobsBundle type out of specific fork

this works until the type changes in a future fork, although it may not change

Author: ralexstokes

mev-rs/src/types/auction_contents.rs

@@ -1,4 +1,5 @@
 use crate::types::ExecutionPayload;
+pub use deneb::BlobsBundle;
 use ethereum_consensus::Fork;
 
 pub mod bellatrix {
@@ -84,7 +85,7 @@ impl AuctionContents {
         }
     }
 
-    pub fn blobs_bundle(&self) -> Option<&deneb::BlobsBundle> {
+    pub fn blobs_bundle(&self) -> Option<&BlobsBundle> {
         match self {
             Self::Deneb(inner) => Some(&inner.blobs_bundle),
             _ => None,

mev-rs/src/types/block_submission.rs

@@ -1,4 +1,4 @@
-use crate::types::{auction_contents::deneb::BlobsBundle, ExecutionPayload};
+use crate::types::{auction_contents::BlobsBundle, ExecutionPayload};
 use ethereum_consensus::{
     primitives::{BlsPublicKey, BlsSignature, ExecutionAddress, Hash32, Slot},
     ssz::prelude::*,