remove camelcase from api responses (#167)

### TL;DR
Updated JSON field names to follow consistent snake_case convention and added backward compatibility for deprecated fields.

### What changed?
- Renamed `decodedData` to `decoded` in transaction and log responses
- Changed `indexedParams` to `indexed_params` and `nonIndexedParams` to `non_indexed_params`
- Added deprecated versions of the params fields to maintain backward compatibility
- Added swagger documentation tags to mark deprecated fields

### How to test?
1. Make API requests that fetch decoded logs and transactions
2. Verify new snake_case fields contain the expected data
3. Confirm deprecated camelCase fields still work and contain the same data
4. Check swagger documentation reflects the deprecated status of old fields

### Why make this change?
To establish consistent snake_case naming conventions across the API while ensuring existing integrations continue to work through a deprecation period.

Author: iuwqyir

internal/common/log.go

@@ -58,10 +58,12 @@ type LogModel struct {
 }
 
 type DecodedLogDataModel struct {
-	Name             string                 `json:"name"`
-	Signature        string                 `json:"signature"`
-	IndexedParams    map[string]interface{} `json:"indexedParams" swaggertype:"object"`
-	NonIndexedParams map[string]interface{} `json:"nonIndexedParams" swaggertype:"object"`
+	Name                       string                 `json:"name"`
+	Signature                  string                 `json:"signature"`
+	IndexedParamsDeprecated    map[string]interface{} `json:"indexedParams" swaggertype:"object" deprecated:"true"`
+	IndexedParams              map[string]interface{} `json:"indexed_params" swaggertype:"object"`
+	NonIndexedParamsDeprecated map[string]interface{} `json:"nonIndexedParams" swaggertype:"object" deprecated:"true"`
+	NonIndexedParams           map[string]interface{} `json:"non_indexed_params" swaggertype:"object"`
 }
 
 type DecodedLogModel struct {
@@ -77,13 +79,13 @@ type RawReceipt = map[string]interface{}
 type DecodedLogData struct {
 	Name             string                 `json:"name"`
 	Signature        string                 `json:"signature"`
-	IndexedParams    map[string]interface{} `json:"indexedParams"`
-	NonIndexedParams map[string]interface{} `json:"nonIndexedParams"`
+	IndexedParams    map[string]interface{} `json:"indexed_params"`
+	NonIndexedParams map[string]interface{} `json:"non_indexed_params"`
 }
 
 type DecodedLog struct {
 	Log
-	Decoded DecodedLogData `json:"decodedData"`
+	Decoded DecodedLogData `json:"decoded"`
 }
 
 func DecodeLogs(chainId string, logs []Log) []*DecodedLog {
@@ -251,10 +253,12 @@ func (l *Log) Serialize() LogModel {
 
 func (l *DecodedLog) Serialize() DecodedLogModel {
 	decodedData := DecodedLogDataModel{
-		Name:             l.Decoded.Name,
-		Signature:        l.Decoded.Signature,
-		IndexedParams:    l.Decoded.IndexedParams,
-		NonIndexedParams: l.Decoded.NonIndexedParams,
+		Name:                       l.Decoded.Name,
+		Signature:                  l.Decoded.Signature,
+		IndexedParams:              l.Decoded.IndexedParams,
+		IndexedParamsDeprecated:    l.Decoded.IndexedParams,
+		NonIndexedParams:           l.Decoded.NonIndexedParams,
+		NonIndexedParamsDeprecated: l.Decoded.NonIndexedParams,
 	}
 	return DecodedLogModel{
 		LogModel:    l.Log.Serialize(),

internal/common/transaction.go

@@ -53,7 +53,7 @@ type DecodedTransactionData struct {
 
 type DecodedTransaction struct {
 	Transaction
-	Decoded DecodedTransactionData `json:"decodedData"`
+	Decoded DecodedTransactionData `json:"decoded"`
 }
 
 // TransactionModel represents a simplified Transaction structure for Swagger documentation