add a "threshold" and "head" parameter to the "delegators" rpc call

[ghost]

Summary

RPC call:
https://docs.nano.org/commands/rpc-protocol/#delegators

the delegators call doesn't have a threshold, so if there's many delegators, the node runs out of ram when processing the call.

the accounts_pending call has a "threshold", so I'd like delegators to behave like accounts_pending, and omit any delegator below a given threshold.

What problem would be solved by this feature?

the node runs out of ram when processing the call if there are a lot of low weight delegators.

Are there any previous requests for this feature?

no

Do you have a suggested solution?

no

If this feature is approved, would you be willing to submit a pull request with the solution?

I am willing to collaborate

Possible solution

No response

Supporting files

No response

[shryder]

It's going to be available on v23: #3333