Significant memory optimization when working with masks

[bsekachev]

Motivation and context

Snapshot 5 after playing the frames twice before the patch
Snapshot 6 after playing the frames twice after the patch

Resolved #6994

TODO:

• Check models/interactors
• Check remove underlying pixels

How has this been tested?

Checklist

• I submit my changes into the develop branch
• I have created a changelog fragment
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues (see 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.

[codecov]

Codecov Report

Merging #6996 (631c78d) into develop (b450b44) will decrease coverage by 0.06%.
Report is 10 commits behind head on develop.
The diff coverage is 87.78%.

@@             Coverage Diff             @@
##           develop    #6996      +/-   ##
===========================================
- Coverage    82.59%   82.53%   -0.06%     
===========================================
  Files          360      360              
  Lines        38926    38977      +51     
  Branches      3570     3577       +7     
===========================================
+ Hits         32150    32171      +21     
- Misses        6776     6806      +30     

Components	Coverage Δ
cvat-ui	77.51% <87.78%> (-0.10%)	⬇️
cvat-server	87.16% <ø> (-0.01%)	⬇️