[EP 5.15][Social] ENS Governor Improvement Proposal: ProposalBond

We believe adding (rather than changing) the functionality in proposing executable ENS proposals with a required bond mechanism is the right approach and the proposed initial values are reasonable. As Kent pointed out, we assume the frontends can utilize the additional changes provided by this proposal for the onchain tools to be supported by multiple platforms while the development is approved by the DAO to go ahead.