Registers a new ModifierConfig to the modifier catalog for use in sim.

In the event of duplicates (by name), will keep the original instance and instead add the count and duration.

Does no modifier comparisons/duplicate checks.

In the event of duplicates (by name), will add the incoming duration to the existing instance.

In the event of duplicates (by name), will reset the Duration of the existing instance, but not replace.

Compares modifiers by name.

Compares modifiers by name and source (can have multiple instances of same mod).

In the event of duplicates (checked by modifier name), will keep the current instance on the target unmodified.

Determines how duplicate modifiers will "stack" when added.