Extend Collator reward for another 2 weeks

TL,DR

Due to exhaustion of Collator BNC rewards on Bifrost-Kusama, the purpose of this proposal is to:

1. Extend the reward time of Bifrost-Kusama's Collator BNC for 14 days.
2. Supply the corresponding amount of Collator BNC rewards: 30,240 BNC

Summary

Collator module will be migrated to Bifrost-Polkadot in the next Runtime version 15000, this proposal will extend the collator reward for 2 weeks addition, in order to fetch the timeline of Bifrost Polkadot next upgrade.

Rewarding time will be extended for extra 14 days with 30,240 BNC, and it will still remain the emission rate of 180 BNC/Round (each round takes 600 blocks, each block takes approx. 12s).

Addresses:

Bifrost Treasury：c3xCFsLRpqtDU4PoPRGS8eRvYmiCXbEuCzrGexnBe8pusLb

Bifrost Collator Reward Pallet address (rewarding address)：eCSrvbA5gGNQr7VZ48fkCX5vkt1H16F8Np9g2hYssRXHZJF