feat(router): add retrieve poll status api (#4358)

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

crates/api_models/src/poll.rs

@@ -0,0 +1,28 @@
+use common_utils::events::{ApiEventMetric, ApiEventsType};
+use serde::Serialize;
+use utoipa::ToSchema;
+
+#[derive(Debug, ToSchema, Clone, Serialize)]
+pub struct PollResponse {
+    /// The poll id
+    pub poll_id: String,
+    /// Status of the poll
+    pub status: PollStatus,
+}
+
+#[derive(Debug, strum::Display, strum::EnumString, Clone, serde::Serialize, ToSchema)]
+#[strum(serialize_all = "snake_case")]
+#[serde(rename_all = "snake_case")]
+pub enum PollStatus {
+    Pending,
+    Completed,
+    NotFound,
+}
+
+impl ApiEventMetric for PollResponse {
+    fn get_api_event_type(&self) -> Option<ApiEventsType> {
+        Some(ApiEventsType::Poll {
+            poll_id: self.poll_id.clone(),
+        })
+    }
+}