Allow PopupActionItems to be links

[ntatko]

I have a use case where I want a popup action group where it's just a bunch of links. I realize I could make a func that goes and makes a virtual button that gets clicked, but I think a more elegant solution would be to allow a <PopupActionItem /> which includes link props:

<PopupActionItem href="https://ol-kit.com" target="_blank" onClick={() => setModalState(false)} />

☝️ This would be a link, and would use a styled component styled.a rather than a styled.span as we do now

Regular PopupActionItems would be unchanged,

<PopupActionItem onClick{() => setModalState(false)} />

would be treated as a button, not a link.

[ntatko]

Also, when this ships, I'd love for it to be shipped as a 0.x.x, so I can use it within Bayer 😄