chore: Added new fields for the account/transaction info

[manishdait]

Description:
This PR introduce additional fields for account/transaction info. with improve null checks and handling

Related issue(s):

Fixes #238

Notes for reviewer:
We will need to update the mirror-node version to for the ci to see the high volume fields

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

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