Add basic first parallel model

core/lib/multivm/src/versions/era_vm/mod.rs

@@ -8,5 +8,6 @@ mod snapshot;
 #[cfg(test)]
 mod tests;
 pub mod tracers;
+pub mod transaction;
 mod transaction_data;
 pub mod vm;

core/lib/multivm/src/versions/era_vm/tracers/refunds_tracer.rs

@@ -3,12 +3,13 @@ use zksync_types::{H256, U256};
 use zksync_utils::ceil_div_u256;
 
 use super::traits::{Tracer, VmTracer};
+pub use crate::vm_latest::Refunds;
 use crate::{
     era_vm::hook::Hook,
     vm_latest::{
         constants::{OPERATOR_REFUNDS_OFFSET, TX_GAS_LIMIT_OFFSET},
         utils::fee::get_batch_base_fee,
-        L1BatchEnv, Refunds,
+        L1BatchEnv,
     },
 };
 

core/lib/multivm/src/versions/era_vm/transaction.rs

@@ -0,0 +1,17 @@
+use zksync_types::Transaction;
+
+pub struct ParallelTransaction {
+    pub tx: Transaction,
+    pub refund: u64,
+    pub with_compression: bool,
+}
+
+impl ParallelTransaction {
+    pub fn new(tx: Transaction, refund: u64, with_compression: bool) -> Self {
+        Self {
+            tx,
+            refund,
+            with_compression,
+        }
+    }
+}