Use tasks in analytic model tester tool

[VargBurz]

This PR updates analytic_model_tester.py tool: get info for learning and detection from tasks, same as analytics gets from server.

Motivation:

We want to get info after all analytics process, not only after model process

Changes:

• Use AnalyticUnitManager instance instead of Detector
• ModelData class:
  • new get_task method: create task for learning or detect
  • new get_formated_segments, get_positive_segments, get_negative_segments methods for simplify segments control
    • use asyncio: main() is async function now
    • main(): send learning and detect tasks to AnalyticUnitManager and await its results, get metrics from detection result.

[jonyrock]

@VargBurz let's close it in two days or remove this PR @rozetko please check

[VargBurz]

close and move this PR to hastic-analytics