chore: support multi-org group sync with runtime configuration (#14578)

- Implement multi-org group sync
- Implement runtime configuration to change sync behavior
- Legacy group sync migrated to new package

coderd/database/queries/groups.sql

@@ -52,6 +52,10 @@ WHERE
 						)
 				ELSE true
 		END
+		AND CASE WHEN array_length(@group_names :: text[], 1) > 0  THEN
+				groups.name = ANY(@group_names)
+			ELSE true
+		END
 ;
 
 -- name: InsertGroup :one