Add the following crypto_sign_init related functions.
public native int crypto_sign_init(Sign.StateCryptoSign state);
public native int crypto_sign_update(Sign.StateCryptoSign state, byte[] chunk, long chunkLength);
public native int crypto_sign_final_create(Sign.StateCryptoSign state, byte[] sig, Pointer sigLen, byte[] sk);
public native int crypto_sign_final_verify(Sign.StateCryptoSign state, byte[] sig, byte[] pk);
Add the following
crypto_sign_init
related functions.