refactor: move getNodeLevel function into NodeSecureNetwork class

[iddahadev]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 57.65%. Comparing base (28ee6a9) to head (8ef5968).
⚠️ Report is 278 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##            master     #619       +/-   ##
============================================
- Coverage   100.00%   57.65%   -42.35%     
============================================
  Files           15       44       +29     
  Lines          649     3202     +2553     
  Branches         0       14       +14     
============================================
+ Hits           649     1846     +1197     
- Misses           0     1356     +1356     

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