Working on linter configurations

[bsekachev]

Motivation and context

1. This patch cleans up all the eslint configurations, to unify them across the whole project. No more pain with different codestyles across the project.
2. Dropped prettifier

All the source files are only refactored here

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) 2021 Intel Corporation
#
# SPDX-License-Identifier: MIT

[bsekachev]

@ActiveChooN @klakhov
Guys, could you please look at this patch?