feat: number of languages param for top langs card

[bashbaugh]

Simply allows a user to specify how many languages to show on the top-langs card, between 1 and 10. Default is still 5.

Example here: https://benjamins-readme-stats-bt29bovd9.vercel.app/api/top-langs/?username=scitronboy&layout=compact&theme=gruvbox&num_langs=10

Let me know if I need to add anything else to the PR.

[codecov]

Codecov Report

Merging #445 into master will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #445      +/-   ##
==========================================
+ Coverage   93.91%   93.92%   +0.01%     
==========================================
  Files          17       17              
  Lines         526      527       +1     
  Branches      143      144       +1     
==========================================
+ Hits          494      495       +1     
  Misses         28       28              
  Partials        4        4              

Impacted Files	Coverage Δ
api/top-langs.js	94.11% <100.00%> (ø)
src/cards/top-languages-card.js	100.00% <100.00%> (ø)
src/fetchers/top-languages-fetcher.js	100.00% <100.00%> (ø)

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[bashbaugh]

Update: there seems to be an issue with the bottom padding being too short for 1 lang and too tall for 10 langs, I'll see if I can fix it.

[bashbaugh]

Ok, it looks much better now: https://benjamins-readme-stats.vercel.app/api/top-langs/?username=scitronboy&layout=compact&theme=gruvbox&num_langs=10

[cobrexus]

Looks good to me

[cobrexus]

Actually, could you put some more padding between each line to improve readability?

[anuraghazra]

Thanks @scitronboy this looks good, requested a minor change please look into it :)

[bashbaugh]

Ok, done. I clamped to the number 1, 10 with a default of 5. I have not changed the padding as Aryan suggested as it's the compact theme and I believe changing the padding would make it unnecessarily non-compact.

[anuraghazra]

Thanks for the PR @scitronboy