Search: Return counts for values within an folder/repository (#97534)

pkg/storage/unified/sql/data/resource_stats.sql

@@ -5,10 +5,13 @@ SELECT
   COUNT(*),
   MAX({{ .Ident "resource_version" }})
 FROM {{ .Ident "resource" }}
-{{ if .Namespace }}
 WHERE 1 = 1
+{{ if .Namespace }}
   AND {{ .Ident "namespace" }} = {{ .Arg .Namespace }}
 {{ end}}
+{{ if .Folder }}
+  AND {{ .Ident "folder" }} = {{ .Arg .Folder }}
+{{ end}}
 GROUP BY 
   {{ .Ident "namespace" }},
   {{ .Ident "group"     }},