[frontend/backend] e2e tests for CRUD operations on Reports (#5648)

[lndrtrbn]

Proposed changes

• Start backend with e2e prefix for Elastic indices when running tests locally
• Possibility to inject STIX data in indices
• Page models for input fields and forms
• e2e tests on CRUD operations for Reports

Related issues

• Implement test automation for CRUD #5648

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case (coverage and e2e)
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.93%. Comparing base (dc3cd32) to head (4e14c2b).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6682      +/-   ##
==========================================
- Coverage   67.94%   67.93%   -0.01%     
==========================================
  Files         553      553              
  Lines       67171    67171              
  Branches     5657     5656       -1     
==========================================
- Hits        45640    45635       -5     
- Misses      21531    21536       +5     

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