the state diff method belongs to node interactions (#20)

Signed-off-by: Cyrill Leutwiler <bigcyrill@hotmail.com>

crates/node-interaction/src/lib.rs

@@ -1,6 +1,6 @@
 //! This crate implements all node interactions.
 
-use alloy::rpc::types::trace::geth::GethTrace;
+use alloy::rpc::types::trace::geth::{DiffMode, GethTrace};
 use alloy::rpc::types::{TransactionReceipt, TransactionRequest};
 use tokio_runtime::TO_TOKIO;
 
@@ -18,4 +18,7 @@ pub trait EthereumNode {
 
     /// Trace the transaction in the [TransactionReceipt] and return a [GethTrace].
     fn trace_transaction(&self, transaction: TransactionReceipt) -> anyhow::Result<GethTrace>;
+
+    /// Returns the state diff of the transaction hash in the [TransactionReceipt].
+    fn state_diff(&self, transaction: TransactionReceipt) -> anyhow::Result<DiffMode>;
 }