Add SavedQuery nodes to grouping process

Our grouping logic seems to be in a weird spot. It seems liek we're
moving to setting the `group` for a node in the node's `config` however,
all of the logic around grouping is still focused on the top level `group`
property on a nodes. To get group stuff plumbed I've thus added `group`
as a top level property of the `SavedQuery` node, and populated it from
the config group value.

core/dbt/contracts/graph/nodes.py

@@ -1743,6 +1743,7 @@ class SavedQuery(GraphNode):
     metadata: Optional[SourceFileMetadata] = None
     config: SavedQueryConfig = field(default_factory=SavedQueryConfig)
     unrendered_config: Dict[str, Any] = field(default_factory=dict)
+    group: Optional[str] = None
 
 
 # ====================================

core/dbt/parser/manifest.py

@@ -94,6 +94,7 @@
     Macro,
     Exposure,
     Metric,
+    SavedQuery,
     SeedNode,
     SemanticModel,
     ManifestNode,
@@ -1236,12 +1237,15 @@ def check_valid_group_config(self):
         for semantic_model in manifest.semantic_models.values():
             self.check_valid_group_config_node(semantic_model, group_names)
 
+        for saved_query in manifest.saved_queries.values():
+            self.check_valid_group_config_node(saved_query, group_names)
+
         for node in manifest.nodes.values():
             self.check_valid_group_config_node(node, group_names)
 
     def check_valid_group_config_node(
         self,
-        groupable_node: Union[Metric, SemanticModel, ManifestNode],
+        groupable_node: Union[Metric, SavedQuery, SemanticModel, ManifestNode],
         valid_group_names: Set[str],
     ):
         groupable_node_group = groupable_node.group

core/dbt/parser/schema_yaml_readers.py

@@ -705,6 +705,7 @@ def parse_saved_query(self, unparsed: UnparsedSavedQuery) -> None:
             where=[WhereFilter(where_sql_template=where_str) for where_str in unparsed.where],
             config=config,
             unrendered_config=unrendered_config,
+            group=config.group,
         )
 
         # Only add thes saved query if it's enabled, otherwise we track it with other diabled nodes