Add fields in block header for proposer and fees collected.

These are needed for algorand/go-algorand#5740
and should not be merged until that work is finalized.

types/block.go

@@ -28,6 +28,25 @@ type (
 		// Genesis hash to which this block belongs.
 		GenesisHash Digest `codec:"gh"`
 
+		// Proposer is the proposer of this block. Like the Seed, agreement adds
+		// this after the block is assembled by the transaction pool, so that the same block can be prepared
+		// for multiple participating accounts in the same node. Populated if proto.Payouts.Enabled
+		Proposer Address `codec:"prp"`
+
+		// FeesCollected is the sum of all fees paid by transactions in this
+		// block. Populated if proto.EnableMining.
+		FeesCollected MicroAlgos `codec:"fc"`
+
+		// Bonus is the bonus incentive to be paid for proposing this block.  It
+		// begins as a consensus parameter value, and decays periodically.
+		Bonus MicroAlgos `codec:"bi"`
+
+		// ProposerPayout is the amount that should be moved from the FeeSink to
+		// the Proposer at the start of the next block.  It is basically the
+		// bonus + the payouts percent of FeesCollected, but may be zero'd by
+		// proposer ineligibility.
+		ProposerPayout MicroAlgos `codec:"pp"`
+
 		// Rewards.
 		//
 		// When a block is applied, some amount of rewards are accrued to