db: add List All Kv Records query

During the upcoming upcoming migration of the firewall database to SQL,
we need to be able to check all kvstores records in the SQL database,
to validate that the migration is successful in tests.

This commits adds a query to list all kvstores records, which enables
that functionality.

Author: ViktorTigerstrom

db/sqlc/kvstores.sql.go

@@ -28,6 +28,10 @@ VALUES ($1, $2, $3, $4, $5, $6);
 DELETE FROM kvstores
 WHERE perm = false;
 
+-- name: ListAllKVStoresRecords :many
+SELECT *
+FROM kvstores;
+
 -- name: GetGlobalKVStoreRecord :one
 SELECT value
 FROM kvstores