OperationConditionalCreateToManyWithReverseRelation convert operation fixed

[stefan-lindegger]

Fixes #89.
OperationConditionalCreateToManyWithReverseRelation convert operation fixed - filter for duplicate entries.
Tests and fest data enhanced (scenarios for handling of composition with list properties added)

[codecov]

Codecov Report

Merging #90 (67c4188) into develop (f833a24) will increase coverage by 0.04%.
The diff coverage is 100.00%.

❗ Current head 67c4188 differs from pull request most recent head b43ec25. Consider uploading reports for the commit b43ec25 to get more accurate results

@@             Coverage Diff             @@
##           develop      #90      +/-   ##
===========================================
+ Coverage    80.03%   80.07%   +0.04%     
===========================================
  Files          105      105              
  Lines         1983     1987       +4     
  Branches       142      142              
===========================================
+ Hits          1587     1591       +4     
  Misses         335      335              
  Partials        61       61              

Impacted Files	Coverage Δ
...ationConditionalCreateToManyWithReverseRelation.cs	100.00% <100.00%> (ø)

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