Configure eslint for spec files

[sequba]

Context

Install and configure rules for eslint-plugin-jest and eslint-plugin-jasmine

How did you test your changes?

unit tests, linter

[github-actions]

Performance comparison of head (c4d2f85) vs base (348fff0)

                                     testName |   base |   head | change
------------------------------------------------------------------------
                                      Sheet A | 492.56 | 494.77 | +0.45%
                                      Sheet B | 160.27 | 162.53 | +1.41%
                                      Sheet T | 140.81 | 145.93 | +3.64%
                                Column ranges | 501.82 | 502.78 | +0.19%
Sheet A:  change value, add/remove row/column |  14.98 |  14.86 | -0.80%
 Sheet B: change value, add/remove row/column | 130.88 | 128.51 | -1.81%
                   Column ranges - add column |  139.1 | 137.38 | -1.24%
                Column ranges - without batch | 435.84 | 433.55 | -0.53%
                        Column ranges - batch | 111.92 |  108.8 | -2.79%

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.22%. Comparing base (348fff0) to head (c4d2f85).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1564   +/-   ##
========================================
  Coverage    97.22%   97.22%           
========================================
  Files          169      169           
  Lines        14536    14536           
  Branches      3174     3174           
========================================
  Hits         14133    14133           
  Misses         396      396           
  Partials         7        7           

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[AMBudnik]

Fixed in v3.1.1