fix(connector_onboarding): Check if connector exists for the merchant account and add reset tracking id API (#3229)

crates/router_env/src/logger/types.rs

@@ -317,6 +317,8 @@ pub enum Flow {
     GetActionUrl,
     /// Sync connector onboarding status
     SyncOnboardingStatus,
+    /// Reset tracking id
+    ResetTrackingId,
     /// Verify email Token
     VerifyEmail,
     /// Send verify email