[AIP-119] Invest in Den Technologies

# Proposal Invest $50k in Den Technologies. # Context Den (https://www.onchainden.com) provides a self-custodial, multi-signature wallet for on-chain organizations. Teams, including DAOs and traditional organizations, use Den for managing protocols, interacting with DeFi, executing on-chain operations, and more. Den is built on top of the Safe Contracts (formerly Gnosis Safe). Over $5B in transaction volume has been processed through Den, with just under $1B in volume last year and over $3B...