Min-max width/height support

[ibrahimpenekli]

How should we import this new feature?

[ibrahimpenekli]

Added support for min width/height via LayoutElement in v1.7.0; don't know how to support max width/height though.

[gunseliozkan]

I looked it up and tested somethings myself to see if we were able to implement max width/height but it seems it is not possible handling it using the current layout system of Unity.

Two possible solutions:

1. Creating an extra UI object in hierarchy to mimic max width/height (I think this is overkill and it may introduce more bugs)
2. Writing our own layout element like this: https://stackoverflow.com/a/41048468

[ibrahimpenekli]

We should go with option 2. but it is not urgent at all.