properly parse notes array on folder collections (#1)

Co-authored-by: David Ashby <delta.mu.alpha@gmail.com>
Reviewed-on: #1

user_collection.go

@@ -67,7 +67,7 @@ type CollectionItemSource struct {
 	DateAdded        string           `json:"date_added"`
 	FolderID         int              `json:"folder_id,omitempty"`
 	InstanceID       int              `json:"instance_id"`
-	Notes            string           `json:"notes,omitempty"`
+	Notes            []Note           `json:"notes,omitempty"`
 	Rating           int              `json:"rating"`
 }
 
@@ -88,6 +88,12 @@ type BasicInformation struct {
 	Year        int            `json:"year"`
 }
 
+// Note ...
+type Note struct {
+	ID    int    `json:"field_id"`
+	Value string `json:"value"`
+}
+
 // CollectionItems list of items in a user’s collection
 type CollectionItems struct {
 	Pagination Page                   `json:"pagination"`