Cypress. Update case 108. Find a better way for check shape rotation.

[dvkruchinin]

Motivation and context

Reworking the test for target branch.
Reworking check for a shape rotation. Calculating and checking the angle of rotation of a shape based on data from getCTM().

How has this been tested?

Checklist

• I submit my changes into the develop branch
• I have added a 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

[dvkruchinin]

Hi @bsekachev
Please take a look on this PR instead of #4060

[dvkruchinin]

Hi @bsekachev,
I added a step here for copy/paste a rotated shape #4061