[Enhancement]: Announced blocks parallel download

[kamilsa]

Description

Once block announcements is received request the block from multiple peers

Motivation

Currently KAGOME requests block from the peer it received block announce from. To speed up block receiving we could send multiple block requests to different peers.

Additional context

Amount of peers we are requesting blocks should be configured via the flag (taken from Polkadot-sdk):

      --max-parallel-downloads <COUNT>
          Maximum number of peers from which to ask for the same blocks in parallel.

          This allows downloading announced blocks from multiple peers. Decrease to save traffic and risk
          increased latency.

          [default: 5]

Are you planning to do it yourself in a pull request ?

Maybe