Fix subkey does not verify with pubkey (#3547)

* Decode hex

* Remove log

* Some refactoring to help with testing

* Add own functions for sign and verify.

* Add sign test

* Sign-verify test

* Generate-sign-verify test for both cryptos

* Add aliases

* Print signature

* More refactoring

* Update sign-transaction as transfer

* Simplify transfer and sign-transaction

* main to top file

* rename read_input_message to read_message_from_stdin

* More refactoring

* Add read_required_parameter

* Add format seed

* More refactoring

* format code

* add print_extrinsic

* Remove 0x from print

* fix naming

* Fix readme

* Remove rustfmt

* Remove commented test

* Fix import nits