Add sk.json

[dodog]

First of all, thank you for this fronted.
I translated it into Slovak because it was missing there.
It is a manual translation, not a translation using AI.

[Nerivec]

It looks like the language is not supported by the time library used by WindFront:
https://github.com/hustcc/timeago.js/tree/master/src/lang
You can PR there, but in meantime, could you translate these, so I can register a custom language?

    ['just now', 'right now'],
    ['%s seconds ago', 'in %s seconds'],
    ['1 minute ago', 'in 1 minute'],
    ['%s minutes ago', 'in %s minutes'],
    ['1 hour ago', 'in 1 hour'],
    ['%s hours ago', 'in %s hours'],
    ['1 day ago', 'in 1 day'],
    ['%s days ago', 'in %s days'],
    ['1 week ago', 'in 1 week'],
    ['%s weeks ago', 'in %s weeks'],
    ['1 month ago', 'in 1 month'],
    ['%s months ago', 'in %s months'],
    ['1 year ago', 'in 1 year'],
    ['%s years ago', 'in %s years']

[dodog]

Yes, sure.
I realised it also, I am working on PR. Meanwhile:

    [['práve teraz', 'práve teraz']],
    [['pred %s sekundami', 'o %s sekundy'], ['pred %s sekundami', 'o %s sekúnd']],
    [['pred minútou', 'o minútu']],
    [['pred %s minútami', 'o %s minúty'], ['pred %s minútami', 'o %s minút']],
    [['pred hodinou', 'o hodinu']],
    [['pred %s hodinami', 'o %s hodiny'], ['pred %s hodinami', 'o %s hodín']],
    [['včera', 'zajtra']],
    [['pred %s dňami', 'o %s dni'], ['pred %s dňami', 'o %s dní']],
    [['minulý týždeň', 'budúci týždeň']],
    [['pred %s týždňami', 'o %s týždne'], ['pred %s týždňami', 'o %s týždňov']],
    [['minulý mesiac', 'budúci mesiac']],
    [['pred %s mesiacmi', 'o %s mesiace'], ['pred %s mesiacmi', 'o %s mesiacov']],
    [['pred rokom', 'budúci rok']],
    [['pred %s rokmi', 'o %s roky'], ['pred %s rokmi', 'o %s rokov']],
    

[Nerivec]

I used the same inflection logic as https://github.com/hustcc/timeago.js/blob/master/src/lang/cs.ts
Can you let me know if number >= 5 is correct here too?

[dodog]

Yes, it is basically the same inflection logic as in Czech. 5 is correct too.

[Nerivec]

Thanks!