[Formatter] add language definition for numbers

[TomGallon]

Description

It is now possible to define languages to correctly format number for the current language.

To do so, define a specific initiliazer:

import {language} from 'focus-core/definition/formatter/number';
import frLanguage from 'numeral/languages/fr';

export default () => {
    console.info('|--- NUMERAL');

    // load fr language
    language('fr', frLanguage);
    console.info('   |--- Add language french');

    //define the language
    language('fr');
    console.info('   |--- Numeral correctly initialized. Current language:' + language());
}

[Bernardstanislas]

Maybe call it setLanguage rather than language

[TomGallon]

I agree with you.
But we discussed with @pierr. He prefers to expose the same method.

[Bernardstanislas]

Ok then