adding hash and auxilaryData to formatTxRequests

[jawndiego]

added the following interface:

export interface UserSignatureRequest { message: string; auxilary_data?: Array<string | null> validators_info: ValidatorInfo[] timestamp: { secs_since_epoch: number; nanos_since_epoch: number; } hash: string }

that influences how we format our transaction requests. notice:

const txRequestData: UserSignatureRequest = { message: stripHexPrefix(strippedsigRequestHash), validators_info: validatorsInfo, timestamp: this.getTimeStamp(), auxilary_data: auxilaryData, hash }