Usage
Recover private key from file:
phantom-recover show_private_key -k ${HOME}/new-keypair.json
Recover keypair file from private key:
phantom-recover restore -o ${HOME}/recovered-keypair.json -k 4zWp6278VEz4aXd5zu2Q9jmVrX37BmQYunrBQGjwdHTh2yvrybE3ouev8Gn15rFEtkZQ2b3ybWKiDDFWSaZbGCMf