Properly calculate storm skills DPS

[rnett]

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• I've checked for duplicate open and closed issues by using the search function of the issue tracker

What platform are you running Path of Building on?

Windows

Is your feature request related to a problem?

Many storm skills, like Firestorm or Icestorm, are persistent and do hit damage per second based on a value in the skill, e.g. Firestorm's "One impact every 0.2 seconds" and "Can hit each enemy only once every 0.15 seconds". However, currently, PoB calculates their DPS based on the cast time.

Describe the solution you'd like

DPS calculations for the storm skills should be based upon this, not the cast time.

Describe alternatives you've considered

No response

Additional context

Storm skills have been quite popular this league due to Thunderstorm's auto-shock and Firestorm actually being decent damage.