Function ockam_ffi::ockam_vault_secret_import

#[no_mangle]
pub extern "C" fn ockam_vault_secret_import(
    context: FfiVaultFatPointer,
    secret: &mut u64,
    attributes: FfiSecretAttributes,
    input: *mut u8,
    input_length: u32
) -> FfiOckamError

Import a secret key with the specific handle and attributes.