Livy-interpreter: convert livy scala magic line execution into block execution

Currently, livy scala magic runs code line by line, even when I execute block of codes at one shot.

Issue: If my block of code contains 10 lines, then livy interpreter submit line by line, get status line by line, incase of incomplete statement, it's submitting again and getting status again. So, for 10 lines of code, there is close to 30 to 40 REST calls invoked (for each statement 1 REST call to post the statement and 4-5 REST calls to get the status of statements). Making more

Need to have a way to submit entire block of code at one shot as livy python magic does.