Restructure fees and align incentives

[banteg]

Thanks everyone for feedback. The proposal has been taken over and split up into several parts.

The first one removes withdrawal fees and secures 2/20.

YIP-51: Set Vault v2 fee structure

Authors @banteg, @lehnberg, @milkyklim, @tracheopteryx Summary Focused proposal to set the fee structure for Vaults v2 to: No withdrawal fee Management fee (2%) Performance fee (20%) The proposal leaves: Total fees collected at roughly the same level as for Vaults v1 Strategist reward allocation unchanged YFI staking and rewards unchanged Treasury management unchanged Background The high level design of the next iteration of Yearn Vaults, v2, has been voted on and approved by YFI holder…