Token transfer assets elements

[GhenadieVP]

Jira ticket: paste link here

Description

Asset elements for the token transfer.

• Add/remove account.
• Add/remove/edit fungible resource.
• Add/remove non fungible resource.
• Transfer validation:
  • All containers should have an associated account and at least one resource.
  • Fungible resource transferred amount should be greater than zero.
  • Total sum of transferred fungible resource should not go over total sum.

Screenshot

[kugel3]

Not directly related to this PR:
Now with your nice RoundedCorners implementation, we should get rid of the bad old version that Nikola added. I polished it up before, but it's time to get rid of it. The only good thing was that it used UIRectEdge, and we're probably always interested in pairs of corners.

I would extend UIRectCorner with bottom and top, switch the order of the arguments in your modifier, remove the label for corners and then get rid of .bottom- and and .topRoundedCorners. That would put it inline with .padding.

Something like

func roundedCorners(_ corners: UIRectCorner = .allCorners, fillColor: Color = .app.white, strokeColor: Color = .clear) -> some View

Also not sure what self.modifier... does.

[kugel3]

Looks great. I would probably put the total sum error message below the box, and also ideally make the box border red.

[CyonAlexRDX]

LGTM!

[kugel3]

Excellent overall, just some minor comments, mostly about unifying with views from TransactionReview