UI Tracking with serverless functions

[bsekachev]

Motivation and context

The patch uses server-side implemented serverless tracking to get automatic bounding boxes on client.

How has this been tested?

Manual testing

Checklist

• I submit my changes into the develop branch
• I have added description of my changes into CHANGELOG file
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues (read github docs)
• I have increased versions of npm packages if it is necessary (cvat-canvas,
  cvat-core, cvat-data and cvat-ui)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below)

# Copyright (C) 2020 Intel Corporation
#
# SPDX-License-Identifier: MIT

[coveralls]

Pull Request Test Coverage Report for Build 7318

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 70.809%

---

Totals
Change from base Build 7306:	0.0%
Covered Lines:	12498
Relevant Lines:	17258

---

💛 - Coveralls

[nmanovic]

Please use parameter min_pos_points. By default, the value should be 1

[bsekachev]

In JS I would prefer to use camelCase even if from the server we get snake_case as it done for all model fields in cvat-core (model, user, etc.). Knowing exact fields that we get from server we always can rename them in cvat-core

If we set value 1 here, DEXTR will not work correctly. First need to add parameter to all interactors