Search index will no longer be created from navigation items. Index entries will be decoupled and will require explicit configuration.

Inside FEO, a new resource called FrontendSearchIndex should be created.

The index entry spec should match the current spec in the Chrome service. The definition can be found here: https://github.com/RedHatInsights/chrome-service-backend/blob/main/cmd/search/publishSearchIndex.go#L46-L60. The search index itself is just an array of entries. No additional attributes are required.

The Frontend resource] will receive a new optional attribute, which will be an array of search index entries.