Function indy_sys::anoncreds::indy_issuer_revoke_credential

#[no_mangle]
pub unsafe extern "C" fn indy_issuer_revoke_credential(
    command_handle: CommandHandle, 
    wallet_handle: WalletHandle, 
    blob_storage_reader_cfg_handle: BlobStorageReaderCfgHandle, 
    rev_reg_id: CString, 
    cred_revoc_id: CString, 
    cb: Option<ResponseStringCB>
) -> Error