Deprecate `declaringClass` in favor of `referencedClass` in `JcRawCallExpr` and `JcRawFieldRef`

[IlyaMuravjov]

This PR makes naming in JacoDB less confusing to avoid further bugs like https://github.com/UnitTestBot/usvm/pull/183.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 77.24%. Comparing base (4499986) to head (ef88c70). Report is 2 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop     #221      +/-   ##
=============================================
- Coverage      77.25%   77.24%   -0.02%     
  Complexity      1680     1680              
=============================================
  Files            166      166              
  Lines           9648     9648              
  Branches        1730     1730              
=============================================
- Hits            7454     7453       -1     
  Misses          1509     1509              
- Partials         685      686       +1     

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