[BIP-936] Onchain Wind-down of Protocol: Specs

Summary

The following specifications are for Ethereum, since that is the only chain that requires governance approval for these actions. On all other chains, the core team will perform the analogous actions from their multisig. # Pause Pools ## V2 * asap (DAO multisig): atomically grant itself the permissions, and then disable all official Balancer v2 pool factories that support disabling: | Deployment | Contract | Address |...