Prop 425: Signalling Proposal for OSMO/BUSD (#899) incentivised pool

This is a signalling proposal to include the BUSD pool OSMO/BUSD (#879) into the set of assets that receive OSMO liquidity incentives. After this proposal has passed governance, pool #879 will be added to the regular incentives program of Osmosis.

## About BUSD
BUSD is a 1:1 USD-backed stablecoin approved by NYDFS and issued by Paxos on Ethereum. Binance provides Binance-Peg BUSD on other chains by locking an equivalent amount of assets on Ethereum. The current version of BUSD in use on Osmosis arrives from Ethereum via the Axelar bridge.

Website: https://paxos.com/busd/

Commonwealth Thread: https://commonwealth.im/osmosis/discussion/9766-incentivising-osmobusd