feature: support signature key Rsa and ed25519

[xyq-c-cpp]

1. Binance supports three message signing methods. The current message signing method in the module only supports HMAC. The updated feature will add support for RSA and Ed25519 key types, expanding the range of cryptographic algorithms available for message signing.

[xyq-c-cpp]

when #572 merged, then notify me and merged this. @adshao

[xyq-c-cpp]

@adshao hello, review this.