Allow Range for Resource Cost Fields

[Khunkurisu]

Is your feature request related to a problem? Please describe.
A number of abilities allow you to spend "up to" a certain amount of a given resource to activate it.

Describe the solution you'd like
Simply enable a range so that the popup for spending a resource can allow you to choose a number within that range. Ideally paired with #260.

Describe alternatives you've considered
Currently we just set it to cost 1 and allow them to manually adjust the remainder. This works fine.

Version
0.3.0

Additional context
N/A

Checklist:

• I have searched the existing issues to ensure this feature has not already been requested.

[MangoFVTT]

I think this is not so trivial, as usually abilities that allow a range of cost also make that range modify in some scaling way the damage or test. We'd need to properly provide a means for the selected resource cost to affect the rest of the ability dependent on the cost selected

[Khunkurisu]

I think this is not so trivial, as usually abilities that allow a range of cost also make that range modify in some scaling way the damage or test. We'd need to properly provide a means for the selected resource cost to affect the rest of the ability dependent on the cost selected

The most common use case I see needing targeted to start with is just “focus up to the number of targets” styled abilities.