Update padding after the view is displayed

[SylvainRX]

Hello @levantAJ

Thanks for this pod. I have a suggestion to make :
When I try to change the padding once the view is displayed, the UI isn't updated.
To solve this, I suggest to add some didSets on the insets vars containing the following statements:
invalidateIntrinsicContentSize()
setNeedsDisplay()

Cheers