upgrade job.py to results v2 format by default and expose histogram/shots methods

[LawsonGraham]

@microsoft-github-policy-service agree company="Microsoft"

@microsoft-github-policy-service agree company="Microsoft"

[kikomiss]

Could you please add live-tests to the test_job_results.py that will cover 3 cases:

• get_results() when job output is in microsoft.quantum-results.v2, validate that the output of the method is valid
• get_results_histogram() when job output is in microsoft.quantum-results.v2, validate that the output of the method is valid
• get_results_shots() when job output is in microsoft.quantum-results.v2, validate that the output of the method is valid

You can take the live-method test_job_get_results_with_expired_sas_token() from the same file as an example.