[@mantine/core] Indicator: count support

[AmelloAster]

This pr I did two things in total
The first one.
Enrich the functionality of Indicator

1. Digital overflow display
2. Digital animation
3. processing animation
4. showZero control
5. disabled => isShow
   For the fifth point, I think the name disabled will bring misunderstanding, disabled usually means the component is disabled, but it is still displayed, while this time is to control whether the component is displayed or not, so I think isShow is more appropriate
   The second piece: enrich is function
   I encapsulated an is function file, which contains many basic type determination functions, and I think there will be related needs in the subsequent development

Indicator-related docs and demos have been added, and unit tests for the is function have been passed.

[rtivital]

Hi @AmelloAster, thanks for a PR, please change isShow to disabled back to merge it – it is a breaking change and we cannot introduce it in minor release.

[AmelloAster]

Hi @AmelloAster, thanks for a PR, please change isShow to disabled back to merge it – it is a breaking change and we cannot introduce it in minor release.

ok

[AmelloAster]

Hi @AmelloAster, thanks for a PR, please change isShow to disabled back to merge it – it is a breaking change and we cannot introduce it in minor release.

I've finished changing

[rtivital]

@AmelloAster can you please resolve conflicts?

[AmelloAster]

@AmelloAster can you please resolve conflicts?

OK

[rtivital]

Thanks!