ELK layout options

[SnachBarr]

If I run d2 layout elk I can see I have a few flag options for altering how the ELK engine runs.

--elk-algorithm string
--elk-nodeNodeBetweenLayers int
--elk-padding string
--elk-edgeNodeBetweenLayers int
--elk-nodeSelfLoop int

Am I limited to these 5 available flags?
It says flags correspond to the ones found at https://eclipse.dev/elk/reference.html but there are so many options there that I haven't been able to figure out how to use.

[tsuga]

Ref: /issues/1221

[stereobooster]

#2236