Allow changing separator of n-number-animation component

[ilyosjon09]

This function solves the problem (这个功能解决的问题)

Currently we can format large numbers with a separator for improving readability. However default separator may look odd for people from Russia or Central Asia since the default number separator in these countries' regional format is a single space. Numbers after comma represents fraction of the number.

So allowing to add custom separator or locale would be beneficial to solve this problem.

Expected API (期望的 API)

<n-number-animation separator=" " />
or
<n-number-animation separator-locale="uz-uz" />
or
<n-number-animation respect-locale-format="true" />

[Sepush]

make sence,I will give a PR later.You can use it in Next Version.

[07akioni]

make sence,I will give a PR later.You can use it in Next Version.

I'm not sure browser can give a reasonable format, if it does that's great. If not we should expose the render method.

[Sepush]

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/formatToParts

new Intl.NumberFormat().formatToParts()

looks great for this
/cc @07akioni

[07akioni]

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/formatToParts

new Intl.NumberFormat().formatToParts()

looks great for this /cc @07akioni

Not bad, make sure to notify users compitability.