refactor(events): update api events to follow snake case naming (#2828)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: lsampras

crates/common_utils/src/events.rs

@@ -8,7 +8,7 @@ pub trait ApiEventMetric {
 }
 
 #[derive(Clone, Debug, Eq, PartialEq, Serialize)]
-#[serde(tag = "flow_type")]
+#[serde(tag = "flow_type", rename_all = "snake_case")]
 pub enum ApiEventsType {
     Payout,
     Payment {

crates/router/src/events/api_logs.rs

@@ -22,6 +22,7 @@ use crate::{
 };
 
 #[derive(Clone, Debug, Eq, PartialEq, Serialize)]
+#[serde(rename_all = "snake_case")]
 pub struct ApiEvent {
     api_flow: String,
     created_at_timestamp: i128,

crates/router/src/services/authentication.rs

@@ -29,7 +29,11 @@ pub struct AuthenticationData {
 }
 
 #[derive(Clone, Debug, Eq, PartialEq, Serialize)]
-#[serde(tag = "api_auth_type")]
+#[serde(
+    tag = "api_auth_type",
+    content = "authentication_data",
+    rename_all = "snake_case"
+)]
 pub enum AuthenticationType {
     ApiKey {
         merchant_id: String,