OIP-165: The Framework - Yield Repurchase Facility

*Snapshot note: this was originally posted on the forum as OIP-164 which is already taken by another proposal. To avoid collision, the number has been incremented to 165.* ## Summary: This proposal expands on OIP-163 (The Framework), implementing the same proposal with improved infrastructure via the Yield Repurchase Facility (YRF). ## Proposal: Implement the YRF, which uses Axis Finance (formerly known as Bond) protocol markets to convert DAI into OHM. The YRF calculates inventory to convert...