feat(connector): implement authorize and capture flows for Fiserv (#266)

crates/common_utils/src/lib.rs

@@ -27,6 +27,11 @@ pub mod date_time {
     pub fn convert_to_pdt(offset_time: OffsetDateTime) -> PrimitiveDateTime {
         PrimitiveDateTime::new(offset_time.date(), offset_time.time())
     }
+
+    /// Return the UNIX timestamp of the current date and time in UTC
+    pub fn now_unix_timestamp() -> i64 {
+        OffsetDateTime::now_utc().unix_timestamp()
+    }
 }
 
 /// Generate a nanoid with the given prefix and length