Prop 90: Governance Proposal to Fund Code4rena Audit for Onboarding Middleware

If successful, this proposal will send funds to the Code4rena wallet to fully fund an audit for the Canto Onboarding Middleware. More details on the onboarding middleware can be found here: https://github.com/Canto-Network/CIPs/blob/main/CPIPS/CPIP-002.md