add hide param for prometheus query (needed by __expr__ ds)

Signed-off-by: peekjf72 <jfpik78@gmail.com>

Author: peekjef72

grafana_client/knowledge.py

@@ -365,6 +365,10 @@ def query_factory(datasource, model: Optional[dict] = None, expression: Optional
                 "choices": ["time_series", "table", "heatmap"],
                 # "version": "8.0.0"
             },
+            {
+                "name": "hide",
+                "default": False,
+            },
             {
                 "name": "instant",
                 "default": False,