feat: cache plugin integration

[CodeVoyager]

Ticket

https://github.com/VirtusLab-Open-Source/strapi-plugin-navigation/issues/417

Summary

What does this PR do/solve?

• integration with REST Cache Plugin

Test Plan

• install cache plugin
• enable and provide configuration
• enable cache in plugin's config
• read for a navigation via client call multiple time
• calls after the first one should be affected by caching (load times are lower)
• call cache should be the same for items specified in rest cache plugin's config and navigation calls

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 97.36842% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 53.33%. Comparing base (0f9934f) to head (50fd838).

Files	Patch %	Lines
server/services/admin.ts	95.83%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #419      +/-   ##
==========================================
+ Coverage   51.83%   53.33%   +1.50%     
==========================================
  Files          31       33       +2     
  Lines        1115     1153      +38     
  Branches      332      338       +6     
==========================================
+ Hits          578      615      +37     
- Misses        534      535       +1     
  Partials        3        3              

Flag	Coverage Δ
unittest	53.33% <97.36%> (+1.50%)	:arrow_up:

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