#228 Implementation of equals/hashCode of CubeId is fixed

[alexeiakimov]

Description

This PR fixes the implementation of equals/hashCode of the class CubeId and closes #228.

Type of change

This is a fix of internal implementation, so neither public API, nor serialization format are affected.

How Has This Been Tested? (Optional)

The corner cases mentioned in the bug #228 are added to the CubeIdTest class.

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (f066acf) 92.00% compared to head (65f5cb8) 91.98%.

❗ Current head 65f5cb8 differs from pull request most recent head 882a7f1. Consider uploading reports for the commit 882a7f1 to get more accurate results

Files	Patch %	Lines
...e/src/main/scala/io/qbeast/core/model/CubeId.scala	94.73%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##           main-1.0.0     #231      +/-   ##
==============================================
- Coverage       92.00%   91.98%   -0.02%     
==============================================
  Files              88       88              
  Lines            2214     2209       -5     
  Branches          168      164       -4     
==============================================
- Hits             2037     2032       -5     
  Misses            177      177              

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