Add a register store?

[LVitus]

Is your feature request related to a problem? Please describe.
This would give a good overview over the registered locales. And enable one to easily implement a locales switcher referencing the registered locales as the source of thruth, this is also saving time when adding or modifying locals.

Describe the solution you'd like
I would like a register store to be implemented, which has an array of objects representing each locale. The locale objects could have properties like:

{ languageCode: string; languageName: string; flagUrl: string; etc... }

The locale objects could replace the locale string in the register func, and the string passed currently becomes part of the object.

Describe alternatives you've considered
Right now I am creating the mentioned array myself and I am looping over it and calling the register function for each of the objects. Maybe you could also implement a register locales function which accepts an array of locales objects and registers each locales.

registerStore.set([
{
languageCode: "en",
languageTitle: "English"
},
{
languageCode: "de-DE",
languageTitle: "Deutsch"
},
{
languageCode: "ja-JP",
languageTitle: "日本語"
},
{
languageCode: "fr-FR",
languageTitle: "Français"
}
]);

locales.forEach(locale => {
register(locale.languageCode, () => import($lib/i18n/${locale.languageCode}.json))
});

How important is this feature to you?
important yes

Additional context
none