feat(events): add hashed customer_email and feature_metadata (#5220)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>

crates/api_models/src/analytics/search.rs

@@ -1,3 +1,4 @@
+use common_utils::hashing::HashedString;
 use serde_json::Value;
 
 #[derive(Clone, Debug, Default, serde::Deserialize, serde::Serialize)]
@@ -5,7 +6,7 @@ pub struct SearchFilters {
     pub payment_method: Option<Vec<String>>,
     pub currency: Option<Vec<String>>,
     pub status: Option<Vec<String>>,
-    pub customer_email: Option<Vec<String>>,
+    pub customer_email: Option<Vec<HashedString<common_utils::pii::EmailStrategy>>>,
 }
 
 #[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]

crates/api_models/src/payments.rs

@@ -4821,8 +4821,11 @@ pub struct PaymentsStartRequest {
 #[derive(Debug, Clone, serde::Deserialize, serde::Serialize, ToSchema)]
 pub struct FeatureMetadata {
     /// Redirection response coming in request as metadata field only for redirection scenarios
-    #[schema(value_type = Option<RedirectResponse>)]
     pub redirect_response: Option<RedirectResponse>,
+    // TODO: Convert this to hashedstrings to avoid PII sensitive data
+    /// Additional tags to be used for global search
+    #[schema(value_type = Option<RedirectResponse>)]
+    pub search_tags: Option<Vec<Secret<String>>>,
 }
 
 ///frm message is an object sent inside the payments response...when frm is invoked, its value is Some(...), else its None