Origination fees on borrow

[jgur-psyops]

A per-bank configurable origination fee that is immediately paid to the fee vault recorded on the bank upon any borrow.

Suggest deferring merge until after Switchboard pull deployment.

Other items:

• Add ability to configure interest rates of existing banks via configure_bank (add new rate to InterestRateConfigOpt)
• Add new fields to fuzz test suite
• Add tests with non-zero origination fee

Changes which will require FE/api integration:

• Adds an account to the borrow ix (the fee vault)
• Banks now have a new field: bank.config.interest_rate_config.protocol_origination_fee
• (maybe) Migrate existing banks to take on the new fee