Prepares a transaction to call the "createPack" function on the contract.
import { sendTransaction } from "thirdweb";import { createPack } from "thirdweb/extensions/erc1155"; const transaction = createPack({ contract, contents: ..., numOfRewardUnits: ..., packUri: ..., openStartTimestamp: ..., amountDistributedPerOpen: ..., recipient: ..., overrides: {   ... }}); // Send the transactionawait sendTransaction({ transaction, account });function createPack(  >,The options for the "createPack" function.
>;A prepared transaction object.