Hash out how treasury account accumulates/withdraws fees

[shaspitz]

Currently mev-commit chain base fees accumulate directly to this arbitrary placeholder address. Contract fees can be withdrawn from the contracts with this address. Neither of these accounts represent a treasury, multisig, receiver contract etc.

We need to hash out how the treasury will work for our chain and protocol. Where are fees accumulated? How are they withdrawn? Do we implement a receiver contract?

We'll need to decide if we have separate accounts for contract ownership and fee management, or consolidate.

In the previous contract repo I had a draft PR which may give some inspiration here: primev/contracts#66

[techgangboss]

Fees should accumulate on a multisig contract address, no withdraw necessary for now / no touch policy. Primev dev related multisig & accounts need to be separate from mev-commit treasury related ones