feat: wip

[HinsonSIDAN]

The is a preparatory PR for upcoming V2 upgrade. It reshuffles serialization logics and centralized it, for easier integration for later dependency injection patterns. Also, CSL specific logic is removed and will be documented later. Those apis would be added back per request.

List of removed functions:

export const readTransaction = (tx: string): csl.TransactionJSON => {
  return deserializeTx(tx).to_js_value();
};