add get user profile photos template struct

src/core/requests/get_user_profile_photos.rs

@@ -1,8 +1,16 @@
 use crate::core::requests::RequestContext;
-//TODO:: need implementation
 
+
+//TODO: complete implementation after user_profile_fotos will be added to types/mod.rs
+///Use this method to get a list of profile pictures for a user. Returns a UserProfilePhotos object.
 #[derive(Debug, Clone, Serialize)]
 struct GetUserProfilePhotos<'a> {
     #[serde(skip_serializing)]
     ctx: RequestContext<'a>,
+    /// Unique identifier of the target user
+    user_id: i32,
+    /// Sequential number of the first photo to be returned. By default, all photos are returned.
+    offset: Option<i64>,
+    ///Limits the number of photos to be retrieved. Values between 1—100 are accepted. Defaults to 100.
+    limit: Option<i64>,
 }