Unified the result data schema of 2544, 2889, and 3918

[leonardhyu]

For users who run xoa tests using Python to easily parse the result data, we need to unify the json schema and include it in the user document.

The reason I am raising this issue is because I am writing the user doc about how to tell if the result data is:

• live result
• intermediate result
• final result

The problem I have found is that we are using different names even at the first level, such as telling if the data is final or live, what result state/status it is.

In 2544

    test_case_type: const.TestType
    test_suite_type: str = "xoa2544"
    result_state: const.ResultState = const.ResultState.PENDING
    tx_rate_percent: Decimal
    is_final: bool = True

In 2889

    status=const.StatisticsStatus.PENDING,
    is_live=is_live,

In 3918

    result_state: ResultState = ResultState.PENDING
    is_final: bool = False