Reward workflow changes + feePayments API changes + rewardsReceived native method

[i-skrypnyk]

Description

Reward workflow changes feePayments API changes rewardsReceived native method

Jira Ticket

SDK-1760 SDK-1746

Changes

• metadata storage to store additional forger info - block sign key and vrf public key
• fee rewards flow changes:
  • get forger info from ForgerStakeV2
  • divide forger reward into 2 parts - one for forger, one for delegators
  • store forger delegators rewards into metadata storage
• FeePayments API endoint contain additional info about rewards coming from block fees and from mainchain
• rewardsReceived native method to retrieve info about delegator rewards for a forger

Checks

• [x] Project Builds
• [x] Project passes tests and checks
• [x] Updated documentation accordingly
• [x] Breaking changes have been correctly tagged and notified

Additional information