feat(server): migrate limit number of subresources rule to context object to support openapi 3

[maxim-tschumak]

Related to #714

[codecov-io]

Codecov Report

Merging #821 into master will decrease coverage by 0.03%.
The diff coverage is 75%.

@@             Coverage Diff              @@
##             master     #821      +/-   ##
============================================
- Coverage     85.45%   85.41%   -0.04%     
  Complexity      903      903              
============================================
  Files           170      170              
  Lines          2544     2544              
  Branches        389      389              
============================================
- Hits           2174     2173       -1     
  Misses          152      152              
- Partials        218      219       +1

Impacted Files	Coverage Δ	Complexity Δ
...ly/rule/zalando/SuccessResponseAsJsonObjectRule.kt	53.84% <0%> (-7.7%)	15 <13> (ø)
...ally/rule/zalando/LimitNumberOfSubResourcesRule.kt	85.71% <85.71%> (ø)	12 <12> (?)

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[maxim-tschumak]

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