Prop 206: Trade and Earn rewards allocation

Summary
This proposal defines the rewards allocation of Trade & Earn from epoch 70 to epoch 73, which ends on 4 April 2023 (UTC).
Background
The Trade & Earn rewards program was approved by the Injective community to help support the trading volume of Injective and the growth of the exchange dApps built on Injective.
Proposal
This proposal, if approved, will extend Trade & Earn rewards for another 4 weeks. The following is the breakdown of the rewards:
- Epoch 70 - 2,469 IN
- Epoch 71 - 2,456 INJ
- Epoch 72 - 2,443 INJ
- Epoch 73 - 2,430 INJ