Tax infos for bundles with dynamic pricing

[Schrank]

Last from #194
@sprankhub:

We could at least improve the tax rate display for bundle products with dynamic pricing like this:

If all associated child products have the same tax rate, show this tax rate.
If they have different tax rates, do not show any exact tax rate.
We should just be careful that the retrieval of the child products is performant.

[kapil019]

HI @Schrank, @riconeitzel is there any update on this?

[Schrank]

I don’t think so. Everyone is busy with work, children and other stuff.

If you want this, we are happy to think about it and implement it for money or merge a PR.