Add Edges().to(_:) - Enables to attach the edge of the view to another view or LayoutGuide.

[muukii]

PR adds methods to enable to attach edges of view to other layout-guide or view.

Motivation

I often write the following code in order to attach the edges of the view to UILayoutGuide.
This code is a bit verbosity, and we could have a shorthand if we could add a method to Edges.

Before:

 myOverlayView.easy.layout([
    Top().to(overlayViewLayoutGuide, .top),
    Left().to(overlayViewLayoutGuide, .left),
    Right().to(overlayViewLayoutGuide, .right),
    Bottom().to(overlayViewLayoutGuide, .bottom),
  ])

After:

 myOverlayView.easy.layout(
   Edges().to(overlayViewLayoutGuide)
 )

[nakiostudio-bot]

Current coverage for EasyPeasy.framework is 94.26%

Files changed	-	-
PositionAttribute+UIKit.swift	80.17%	✅

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[muukii]

I've become a collaborator by @nakiostudio. Thanks.
I merge this PR.
And I'm going to continue enhancing this library.