cmd/evm: add gasUsed to t8n result (#23919)

* cmd/evm: add gas used accumulator to t8n result

* cmd/evm: update t8n tests to include gas used field

cmd/evm/internal/t8ntool/execution.go

@@ -55,6 +55,7 @@ type ExecutionResult struct {
 	Receipts    types.Receipts        `json:"receipts"`
 	Rejected    []*rejectedTx         `json:"rejected,omitempty"`
 	Difficulty  *math.HexOrDecimal256 `json:"currentDifficulty" gencodec:"required"`
+	GasUsed     math.HexOrDecimal64   `json:"gasUsed"`
 }
 
 type ommer struct {
@@ -255,6 +256,7 @@ func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig,
 		Receipts:    receipts,
 		Rejected:    rejectedTxs,
 		Difficulty:  (*math.HexOrDecimal256)(vmContext.Difficulty),
+		GasUsed:     (math.HexOrDecimal64)(gasUsed),
 	}
 	return statedb, execRs, nil
 }