Add hash field in GetTransaction & GetTransactions

[hotrungnhan]

Describe your changes

Add transaction hash field for :

• TonClient
  • GetTransaction -> {hash:string} & Transaction
  • GetTransactions -> {hash:string} & Transaction

API is still compatible with the old one.

Issue ticket number and link

I need to scan all of the transactions and store the ref to track the changes, exposing the hash & lt at the same time is the only way to do that.

Checklist before requesting a review

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests.
• Do we need to implement analytics?
• Will this be part of a product update? If yes, please write one phrase about this update.

Update Phrases :

• add transaction hash for TonClient in getTransaction & getTransactions API.