feat: add footerComponent prop to StoryModalProps

[IQDevloper]

No description provided.

[LukasFridmansky]

Hey, thank you for your contribution. I see there a lot of changes in file only because of formatting, can you fix that? Or I can add the property by myself, if I am not mistaken, the only change is new footerComponent property. That also needs to be in readme.

[IQDevloper]

Hey, thank you for your contribution. I see there a lot of changes in file only because of formatting, can you fix that? Or I can add the property by myself, if I am not mistaken, the only change is new footerComponent property. That also needs to be in readme.

Hi, I apologize for the formatting changes. The only functional change I intended to introduce is the new footerComponent property.

If it's not too much trouble, could you please handle the formatting adjustments on your end? I've updated the README to include the new property as well.

Thank you