Masking support for 8-digit BINs

[barspi]

ISOUtil#protect() should have configurable/dynamic masking of PANs to support 8-digit BINs

Come up with a flexible and backward-compatible (default) solution.

[aVolpe]

@barspi this PR #496 has a initial approach to solve this issue, the idea is that we have a Environment property that has the list of 8 length bines and we use that to protect.

We can update the format/name of the property, if is useful, I will update the support for 8 length bines on Card and Cardholder.