[Suggestion]: Add index persistence

[phsd0]

Which fff frontend(s)?

Node SDK (@ff-labs/fff-node)

What problem are you trying to solve?

It would be nice if we could persist index to filesystem to speedup cold start. Is there any options to do that?

Proposed solution

No response

[dmtrKovalenko]

There is a way it is just not surfaced in the bun sdk. I had a hope to surface it at 0.10 but likely I won't be able to so this will only be abe to get to 0.11