Language support

[yellows8]

As mentioned in the source TODOs, the language code needs to be updated once libnx supports get-language.

Also need to figure out NACP languages.

[yellows8]

All that's left for this is the hbmenu impl.

[Maufeat]

#15 - done and merged. But as @yellows8 said, font needs to be updated, to support all characters.

[fincs]

Current font should be enough to cover all Western languages using Latin script even with accents (i.e. that would leave Russian, Japanese, Chinese and Korean out). The font system in place is meant to be a placeholder until the system font can be used (this might require GPU); I don't think it's worth our time adding CJK characters (especially considering their number and consequent increases of filesize).

[yellows8]

Besides font, StrId_Actions_Back needs proper localization for the remaining languages.

[yellows8]

1e23237

Shared-font & NACP done, all that's left is updating language.c for localization then enable setting s_textLang.

[yellows8]

Even with all current PRs merged, more localization for StrId_MsgBox_OK and StrId_LastLoadResult is needed before using {system language}.

i want to translate french

[yellows8]

PR it

[yellows8]

Reminder: still need PRs for the remaining missing language entries for various StrIds in language.c.