Request: Add `layout-padding`

[epelc]

For some reason layout-padding was replaced with layout-margin and according to @ThomasBurleson it has been depreciated. However they are both very useful and I find it hard to argue one is more useful than the other so I propose we have both. Is anyone against adding it back?

I recently started a post on the forums but I don't think it has much traffic yet so I opened this issue.

[epelc]

I also noticed layout-margin doesn't play nicely with 'layout-fill when they are on the same element since they both set margin.

[ThomasBurleson]

@ajoslin - can you comment on this plz.

[ajoslin]

layout-padding was removed because I saw so many cases where the padding wasn't working correctly.

But then, there are cases where it does work correctly. As you said @epelc, let's add it back with margin. That's the best solution.

[epelc]

@ajoslin Thanks for this