v5.0.1-rc.2: Onboarding patches (#788)

* patch panic on autopay parse

* end user genesis tower state patch

* add changelog md file

* patch tx scripts for account creation to include a proper error if the account already exists.

* change submit_tx to return transaction view on error

* better error reporting for validator account creation

* remove don't send arg for most cli transactions

* build stdlib and document the stdlib.mv hash

* rename miner binary in ol cli

* patch ol start behavior when node is not yet running