Full-text search, highlights and assets alias support
It also exposes a plugin API for highlight context menu
```ts
/**
* Current it's only available for pdf viewer
* @param label - displayed name of command
* @param action - callback for the clickable item
* @param opts - clearSelection: clear highlight selection when callback invoked
*/
registerHighlightContextMenuItem: (
label: string,
action: SimpleCommandCallback,
opts?: {
clearSelection: boolean
}
) => unknown
```