re-order fields for readability

Basically:

1. Put types up-front.
2. Put potentially large fields at the bottom.

Previously, the action/result were serialized first which was...
annoying.

chain/types/ethtypes/eth_types.go

@@ -987,12 +987,12 @@ func (e *EthBlockNumberOrHash) UnmarshalJSON(b []byte) error {
 }
 
 type EthTrace struct {
-	Action       any    `json:"action"`
-	Result       any    `json:"result"`
-	Subtraces    int    `json:"subtraces"`
-	TraceAddress []int  `json:"traceAddress"`
 	Type         string `json:"type"`
 	Error        string `json:"error,omitempty"`
+	Subtraces    int    `json:"subtraces"`
+	TraceAddress []int  `json:"traceAddress"`
+	Action       any    `json:"action"`
+	Result       any    `json:"result"`
 }
 
 type EthTraceBlock struct {
@@ -1016,8 +1016,8 @@ type EthCallTraceAction struct {
 	From     EthAddress `json:"from"`
 	To       EthAddress `json:"to"`
 	Gas      EthUint64  `json:"gas"`
-	Input    EthBytes   `json:"input"`
 	Value    EthBigInt  `json:"value"`
+	Input    EthBytes   `json:"input"`
 }
 
 type EthCallTraceResult struct {
@@ -1028,12 +1028,12 @@ type EthCallTraceResult struct {
 type EthCreateTraceAction struct {
 	From  EthAddress `json:"from"`
 	Gas   EthUint64  `json:"gas"`
-	Init  EthBytes   `json:"init"`
 	Value EthBigInt  `json:"value"`
+	Init  EthBytes   `json:"init"`
 }
 
 type EthCreateTraceResult struct {
+	Address *EthAddress `json:"address,omitempty"`
 	GasUsed EthUint64   `json:"gasUsed"`
 	Code    EthBytes    `json:"code"`
-	Address *EthAddress `json:"address,omitempty"`
 }