closes #4807: Expose Pagefind index options

[vladavoX]

Why: To expose more options for Pagefind search

Closes: #4807

What's being changed (if available, include any code snippets, screenshots, or gifs):

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Latest commit: 45a045c

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[vladavoX]

@dimaMachina don't know if I should mention you, this is ready for review