Refacto onstreamcreate and create in index [SBK-335]

[alexisnsns]

This refactored code below throws some errors like 'no account' error when calling create or 'hash undefined' on streamcreate;
Not ready for prod but can be used as a draft.

` // new create function
// async create(
// token: Address,
// amountPerSecond: bigint,
// reason?: string,
// startTime?: number,
// accountOverride?: Address
// ): Promise {
// if (!accountOverride && !this.walletClient?.account)
// throw new Error("No account");

// const account =
// accountOverride || (this.walletClient?.account?.address ?? "0x0");

// const args: Array<number | string | bigint | Address | ByteArray> = [
// token,
// amountPerSecond,
// ];
// if (startTime) {
// args.push(reason ? stringToHex(reason) : "");
// args.push(startTime);
// } else if (reason) {
// args.push(stringToHex(reason));
// }

// // Step 1: Run the transaction
// const hash = await this.walletClient?.writeContract({
// chain: null,
// address: this.address,
// abi: StreamManagerContractType.abi as Abi,
// functionName: "create_stream",
// args,
// account,
// });

// console.log("writeContract params:", {
// chain: null,
// address: this.address,
// abi: StreamManagerContractType.abi,
// functionName: "create_stream",
// args,
// account,
// });

// if (hash === undefined)
// throw new Error("Error while processing transaction. Hash undefined.");

// // Step 2: Wait for transaction to be confirmed
// const receipt = await this.publicClient.waitForTransactionReceipt({
// hash: hash,
// });

// if (!receipt || !receipt.logs || receipt.logs.length === 0) {
// throw new Error("Transaction failed or logs are missing");
// }

// // Step 3: Use the last log for creating the Stream instance
// const lastLog = receipt.logs[receipt.logs.length - 1];

// return Stream.fromEventLog(
// this,
// lastLog,
// this.publicClient,
// this.walletClient
// );
// }

// new onstreamcreated
// onStreamCreated(
// handleStream: (stream: Stream) => null,
// creator?: Address
// ): void {
// const onLogs = (logs: Log[]) => {
// Promise.all(
// logs.map((log: Log) =>
// Stream.fromEventLog(this, log, this.publicClient, this.walletClient)
// .then(handleStream)
// .catch(console.error)
// )
// );
// };

// this.publicClient.watchContractEvent({
// address: this.address,
// abi: StreamManagerContractType.abi as Abi,
// eventName: "StreamCreated",
// args: creator ? { creator } : {},
// onLogs,
// });
// }
`