* Add num_readonly_accounts slice
* Impl programs in account_keys
* Emulate current account-loading functionality using program-account_keys (breaks exchange_program_api tests)
* Fix test
* Add temporary exchange faucet id
* Update chacha golden
* Split num_credit_only_accounts into separate fields
* Improve readability
* Move message field constants into Message
* Add MessageHeader struct and fixup comments
And reduce metrics rate for exchange contract counters.
Since we can go 10s-100s thousands of contracts per second,
some metrics would be dropped if submitting every time.
* Rename programs to instruction_processors
* Updates around the code base to support instruction_processors rename
* Kabab instruction_processors
* Update Cargo.toml files and scripts to use instruction-processors
* Update Cargo.toml to use instruction-processors
* Update CI scripts to use instruction-processors
This will allow BankClient to spin up a thread to use the Bank.
It'll also ease the transaction from BankClient to ThinClient since
it won't let you depend on Bank.
Drawback, you the transition from Bank to BankClient will be harder
because the Bank methods are inaccessible.
