Update all processor functions to use on chain OptionMarket keys rather than account keys where possible

[Taylor123]

This feels like a best practice when generating instructions for cross program invocation.

The main purpose of this is to help guard against bugs that may arise when the accounts in the user's instruction do not match up to those expected in the Processor.

See process_exchange_writer_token_for_quote for an example of how this can be done when burning/transfering SPL tokens