[doc] Add shape for border node initial positioning

[lfasani]

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[lfasani]

No, it is not the right way to do that.
We should put the information on a xxxLayoutStrategyDescription.
-> to rework

[sbegaudeau]

The proposed change would have a massive impact and would prevent some use cases that are currently possible. It would be way less impactful to just add the information on the layout strategy description of the parent node. Like in CSS a div can define where its children are using flexbox or grid for example.

Something like this:

class LayoutStrategyDescription {
    onRightAtCreationBorderNodes: List<NodeDescription>
    onLeftAtCreationBorderNodes: List<NodeDescription>
    onTopAtCreationBorderNodes: List<NodeDescription>
    onBottomAtCreationBorderNodes: List<NodeDescription>
}

We would just need to customize the EMF Edit code to only offer the current border node descriptions of the node description as potential references...

[frouene]

I thinik it's on the right side (EAST position)

[frouene]

You can remove this line

[frouene]

What happen if a same NodeDescription is declared in several lists?

[sbegaudeau]

I'll merge it after the build

I'll dismiss this since it's quite minor and I'll use this PR to perform the release :)