Make auto refresh interval customizable (#4260)

Co-authored-by: Frank Elsinga <frank@elsinga.de>

db/knex_migrations/2023-12-20-0000-alter-status-page.js

@@ -0,0 +1,12 @@
+exports.up = function (knex) {
+    return knex.schema
+        .alterTable("status_page", function (table) {
+            table.integer("auto_refresh_interval").defaultTo(300).unsigned();
+        });
+};
+
+exports.down = function (knex) {
+    return knex.schema.alterTable("status_page", function (table) {
+        table.dropColumn("auto_refresh_interval");
+    });
+};