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

pkg/storage/unified/sql/testdata/sqlite--resource_stats-query-folder.sql

@@ -0,0 +1,15 @@
+SELECT
+  "namespace",
+  "group",
+  "resource",
+  COUNT(*),
+  MAX("resource_version")
+FROM "resource"
+WHERE 1 = 1
+  AND "namespace" = 'default'
+  AND "folder" = 'folder'
+GROUP BY 
+  "namespace",
+  "group",
+  "resource"
+;