[WIP] Migrated to Node 15, npm 7

[bsekachev]

Motivation and context

Resolved #2742

• Used new concept of mono repository in NPM
• Removed a lot of duplicated packages
• Single package-lock.json, single npm ci to install
• Migrated to webpack 5

@vnishukov Please, look if everything works fine on Mac.

P.S. Did not update for cypress testing yet, because

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]

snyk error: Out of sync package.json and package-lock.json detected. Please run "npm install"
Probably is a false alarm (package-lock format was changed in npm 7 and probably snyk cannot work with it)

need to update eslint workflow to run the check successfully (@azhavoro , please look at changes in PR. What do you think?)

[bsekachev]

Probably now is not the best time to migrate (no node 15 LTS yet, stricted support on CI, some big PRs are opened), let's wait some time before going in this way.