web3 RPC to support BlockReward type transaction

[dustinxie]

Description of new feature request

for integration with https://chainspect.app/dashboard/tps. They want to eliminate any non-user transaction from a block to accurately calculate the real TPS of a blockchain. So they want to identify any protocol-initiated tx

We can convert the BlockReward tx, with ContractAddress field in the receipt equals to the protocol address 0xA576C141e5659137ddDa4223d209d4744b2106BE. This would allow the receiving client to uniquely identify the BlockReward tx

Is this a hard-fork (and height to be activated)

• [] Yes
• Name of activation height:

Implementation plan

• [] Phase 1 description (PR number)
• [] Phase 2 description (PR number)
• [] Phase 3 description (PR number)

Affected modules

• [x] action
• [] actpool
• [x] api
• [] blockchain
• [] blockindex
• [] blocksync
• [] chainservice
• [] config
• [] consensus
• [] db
• [] dispatcher
• [] ioctl
• [] p2p
• [] server
• [] state
• [] tools