fine tune miniSearch options

[lazarusA]

Currently we have fuzzy search. But having something more useful for Julia packages would be nice. Adding similar options via

• https://vitepress.dev/reference/default-theme-search#minisearch-options

  miniSearch

• https://lucaong.github.io/minisearch/types/MiniSearch.Options.html

as in Documenter would be best:

• https://github.com/JuliaDocs/Documenter.jl/blob/65deb630d84b349a3a894a054ddb2607ebc65fbd/assets/html/js/search.js#L190