This PR is in preparation for adding more actions to make adding new actions easier.
Separates action data from SkillAction (that's how foundry does it, honestly I'm not sure if that's the best way, but it's a common pattern in foundry).
Implement SkillActionCollection which inherits from Collection class in foundy. Move fromEvent function there.
Rename actionItem to pf2eItem, since I think it reflects what it is a bit better.
This PR is in preparation for adding more actions to make adding new actions easier.
SkillActionCollectionwhich inherits fromCollectionclass in foundy. MovefromEventfunction there.actionItemtopf2eItem, since I think it reflects what it is a bit better.