Re-arrange page's

### Description

Can there be an option to reorder or re arrange the page's without moving the entire code In the glance.yml this would be helpful while using a single yml file

Start by reading the glance.yml configuration and tracing how page order is currently determined. Define a configuration option that lets users reorder pages within one glance.yml without moving their page definitions, then verify that the configured order is reflected in the dashboard.

Written by the indexing model from the issue text.