[REQUEST] Allow currency abbreviations to be translated

[mkahvi]

Is your feature request related to a problem? Please describe.
Abbreviated currency disregards localization by being hardcoded.

Describe the solution you'd like
Ability to define string and key for use in game.i18n.localize() instead of hardcoded string with string replacement shim.

For example

abbreviation: {
  i18n: "PF1.Currency.Abbr.gp"
  key: "gp"
}

Which then is called as

game.i18n.format(abbreviation.i18n, { [abbreviation.key]: 500 })

Or something to that effect. Should be flexible enough

Though I presume not all systems have currencies like that, so maybe just allow it to be a function?

Describe alternatives you've considered
Ignoring i18n problem is the only alternative.

[Haxxer]

How would this work with the currency UI?

[mkahvi]

Would need separate handling for that I would think. Treat input in that UI as override to what's provided via the API.