Generate Public-Private key pair for API User

generate access public private key pair for the api user if you've already set up the sdk, you can use generatepublicprivatekeypair util function in the sdk else, you can use the openssl command line tool to generate key pair openssl ecparam name prime256v1 genkey noout 2>/dev/null | tee >(openssl ec pubout 2>/dev/null)