[FEATURE] Contested Power Rolls

[Veilza]

Is your feature request related to a problem? Please describe.
The ability to trigger a contested roll with certain powers.

Describe the solution you'd like
A check box in the power item category that you can toggle if the power calls for a contested roll, and then two drop down boxes to mark what polls to be used by the targeted token. Then, like with pathfinder module, the targeted token/player can click a hyperlink in the power roll that will trigger their contested roll and compare the two rolls results.

Originally by @DachDolan

[Lemantia]

Just as a side note, such resistance rolls would need to benefit from Blood Potency the same way Power rolls do, as can be seen on page 217 of the corebook for instance, in the description of "Blood Potency 2" (the first Blood Potency to give bonus die)