[Feature Request]: genesis should poll DA for height

[tac0turtle]

Implementation ideas

When the rollup is in genesis it should poll DA for height to know when to start. This is Inline with the new genesis design

Implementation details

Add an endpoint to fetch the first DA height
Add method if the DA start height is 0 and the node is not an aggregator, to fetch the DA height from the above defined endpoint on the aggregator (if specified).

[linear]

ROL-121 [Feature Request]: genesis should poll DA for height

[tac0turtle]

lets keep time, its simpler. making it height adds a lot of complexity here. we can probably just modify the genesis with a start height after the fact.

[julienrbrt]

We may need this now, in order to sync from DA nicely

[tac0turtle]

this would make it more automatic otherwise the team that launched the chain can fill it in