moving AMM contracts from multisig to governance

[tjcloa]

this is separated from #275

IMPORTANT:
multisig owners should be added as pausers to the protocol before passing ownership to governance

https://docs.google.com/document/d/10OTtsEfW-VhlHevU_gb3qbhlw56yosIUM9EXJXLmT1I/edit
the list should be completed with AMM contracts and approved by Ororo

e.g. loan tokens have owner and admin roles. all admin roles need to be set to the admin governor.

there are the AMM contracts missing;

the implementation is a script transferring ownership from multisig to governance on approved contracts from the list above in oracle-based-amm repo

owner role -> timelock of owner governance, admin role -> timelock of admin governance