Custom params experiment

lib/src/data_classes/query.dart

@@ -41,13 +41,16 @@ class Query extends OneQuery {
   /// [Additional info](https://github.com/directus/directus/blob/main/docs/reference/api/query/offset.md)
   int? offset;
 
+  Map<String, dynamic>? params;
+
   /// Constructor for query. All fields are optional.
   Query({
     this.limit,
     this.offset,
     this.sort,
     Map<String, Query>? deep,
     List<String>? fields,
+    this.params,
   }) : super(deep: deep, fields: fields);
 
   /// Convert [Query] to [Map] so it can be passed to Dio for request.
@@ -64,6 +67,7 @@ class Query extends OneQuery {
       'offset': offset,
       'sort': sort?.join(','),
       'deep': deep?.map((key, value) => MapEntry(key, value.toMap())),
+      ...params ?? {}
     }..removeWhere(
         (key, value) => value == null,
       );