olm_pk_encrypt
external fun olm_pk_encrypt(encryption: OlmPkEncryptionPointer?, plaintext: Pointer?, plaintext_length: NativeSize, cipherText: Pointer?, cipherText_length: NativeSize, mac: Pointer?, mac_length: NativeSize, ephemeral_key: Pointer?, ephemeral_key_size: NativeSize, random: Pointer?, random_length: NativeSize): NativeSize