docs(interaction): add locale list link

[ImRodry]

Please describe the changes this PR makes and why it should be merged:

This PR adds a link to a list of all possible locales from Discord's documentation to Interaction#locale

Status and versioning classification:

• This PR only includes non-code changes, like changes to documentation, README, etc.

[suneettipirneni]

Could you also add a LocaleString type that's a union of all the locale types?

[ImRodry]

I don’t know how often Discord adds locales but should we be the ones documenting that? I mean if they do add some the code doesn’t need to be updated but we’d need to update that typedef whereas a simple link to the API docs is always up to date

[DTrombett]

Could you also add a LocaleString type that's a union of all the locale types?

Maybe this can be done in discord-api-types?
I think it would be good to have an enum/type of the possible locale codes

[almeidx]

LocaleString could be used instead of string when/if this is released

• feat(Locales): add locale string enum discord-api-types#297

[ImRodry]

There's no point if it's not gonna link to anything anyways right

[almeidx]

I meant the TS type of it, but that can be done on a separate pull request I suppose

[advaith1]

uh... I just moved this yesterday

• Move locale list from dispatch to reference and link to it discord/discord-api-docs#4335

[ImRodry]

Well it still works so will update when it stops doing so