Configure layer search options at startup

See https://support.vertigis.com/hc/en-us/community/posts/35493760279058-Configure-layer-search-options-at-startup

I want to set the Search options programmatically at app startup.

Which layers are are searchable, is defined in the app configuration.

I want to e.g. to limit the searchable layers at app startup to only the Buildings layer.