validation rewards

[baptiste-b-pegasys]

Configure a way to get rewards when there is a block validation.
There are 3 modes at the moment:

• list: you can provide a list a wallet addresses that will be rewarded of the amount of block reward at every validated block
• besu: compatible with the way besu works
• validators: all validators will be rewarded of the amount of block reward at every validated block, you don't have to provide the addresses, the list is computed

list

as argument of qbft or program and transition

{
    "config": {
      "qbft": {
          "epoch": 30000,
          "policy": 0,
          "ceil2Nby3Block": 0,
          "beneficiaryMode":"list",
          "beneficiaryList":[
                    "0xed9d02e382b34818e88b88a309c7fe71e65f419d",
                    "0xca843569e3427144cead5e4d5999a3d0ccf92b8e"
          ]
      },
      "transitions": [
        {
          "block":12,
          "beneficiaryMode":"list",
          "beneficiaryList":["0xed9d02e382b34818e88b88a309c7fe71e65f419d"]
        }
      ]
    }
}

[achraf17]

LGTM

[antonydenyer]

Can we change case "besu": to case "single" or something like that?