feat: add filterTooltipValueFn option to transform the value of the filter tooltip

[yamadayutaka]

This PR is an implementation of the feature suggestion #359.

Specify the Column Option as follows.

{
  ...
  filterTooltipValueFn: (value: any) => {
    const d = dayjs(value || '');
    return d.isValid() ? d.format('L') : '';
  },
  ...
},

Then, the tooltip is displayed as follows.

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[alessandrojcm]

Hi @yamadayutaka thanks for your contribution, please see the comments I left.

[yamadayutaka]

Hi @alessandrojcm thanks for your reply!
But I can't check your comments.
I think you may have forgotten to "Submit review".
Could you confirm this?

[alessandrojcm]

Not sure here about the type, if the previous type was casted as [string, string] then it should remain so.

[yamadayutaka]

Since filterTooltipValueFn does the conversion to string, I think the input to filterTooltipValueFn should remain the original data type.

[alessandrojcm]

Ok yeah agree, do you think you could type the prop accordingly then? Basically, I´d like to avoid using any when possible.

[yamadayutaka]

I added a type definition. What do you think of this?

[alessandrojcm]

Thanks @yamadayutaka could please add it to the prop? So it'd be filterToolValueFn?: (value: string) => string

[alessandrojcm]

Same here

[alessandrojcm]

Hi @alessandrojcm thanks for your reply! But I can't check your comments. I think you may have forgotten to "Submit review". Could you confirm this?

Yes apologies, please check now.

[alessandrojcm]

Sorry missed that you already typed the props (GH's UI can be very confusing sometimes...) Wil merge now thanks!

[yamadayutaka]

Thanks for merging!