BUGFIX: Wrong plural form in modal of coding contract

[catloversg]

A player reported this bug on Discord. In that modal, we show 1 tries instead of 1 try. While fixing the bug, I see that we rewrite this snippet everywhere:

count + ` line${count !== 1 ? "s" : ""}`

Therefore, I created a utility function for it. We don't have any plans to support more languages in the near future, so using Intl.PluralRules is a bit unnecessary, but it's still harmless.

I also intentionally skip rewriting some code that I don't think they need to use pluralize. For example:

bitburner-src/src/utils/StringHelperFunctions.ts

Line 49 in f337de4

res += `${seconds} second${!showMilli && secTruncMinutes === 1 ? "" : "s"}`;

bitburner-src/src/Terminal/commands/runScript.ts

Line 64 in f337de4

(numThreads === 1 ? "" : ` with ${numThreads} threads`) +

Screenshots: