chore(sever): refactor around NLS layers

[pyshx]

Overview

This PR makes small refactor to mutation made for adding a simple NLS layer.

[netlify]

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Name	Link
🔨 Latest commit	0c53de5
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[codecov]

Codecov Report

Merging #656 (0c53de5) into main (69a88d1) will not change coverage.
The diff coverage is 0.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #656   +/-   ##
=======================================
  Coverage   27.33%   27.33%           
=======================================
  Files        1516     1516           
  Lines      164935   164935           
  Branches     3843     3843           
=======================================
  Hits        45086    45086           
  Misses     118760   118760           
  Partials     1089     1089           

Flag	Coverage Δ
server	33.74% <0.00%> (ø)

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Files Changed	Coverage Δ
...internal/adapter/gql/resolver_mutation_nlslayer.go	0.00% <0.00%> (ø)
server/internal/usecase/interactor/nlslayer.go	0.00% <0.00%> (ø)