search: add exact-match option

[postb99]

Hello,

I just activated the dedicated search page (https://mcshelby.github.io/hugo-theme-relearn/basics/customization/#activate-dedicated-search-page) today and found it fun.

I'd like to add an option to inject number of typos to 0 into \static\js\search.js so that I could add a link from one page to /search.html?search-by=some&exact-match and the results page would only contain exact matches on search term. This way this does not seem complicated.

When reusing the just opened search page the exact-match parameter, when present, should be interpreted by page. This would give the best user experience. I add a link to search page from my site menu too.

[postb99]

Mmh, Searching for "pic-vert" gives results for "vert" only, this wasn't expected, the dash here is not a word separator but a real part of the whole word to search for. Maybe a French specificity.

[McShelby]

Thanks for the input. I will consider this when starting on #407 #490