Support for tags and overall comments in test group results

[rickychen174]

Changes:

• This PR changes the results parser to add tags and overall comments from a test's standard output to its results
• Uses the changes in this PR: Add tags and overall comment from autotester result Markus#7387

Testing Procedure:

• I ran a custom autotester with this test script:
  echo '{"annotations": [{"filename": "submission.py", "content": "Message 1!", "line_start": 3, "line_end": 5, "column_start": 1, "column_end": 4}, {"filename": "submission.py", "content": "Message 2!", "line_start": 6, "line_end": 9, "column_start": 1, "column_end": 4}]} {"name": "Custom Test 4", "output": "Perfect!", "marks_earned": 100, "marks_total": 100, "status": "pass", "time": 1} {"overall_comment": "Test 4 Comment 1!"} {"tags": [{"name": "Tag1", "description": "description1"}, {"name": "Tag2", "description": "description2"}]}'
• The test results contain 2 tags, 1 overall comment, and 2 annotations for the file submission.py