Feat update nav panel

[wanglam]

Description

1. Remove register model from nav panel
2. Add Parent group "Machine Learning" to nav panel

Issues Resolved

List any issues this PR will resolve, e.g. Closes [...].

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (54f8603) 84.30% compared to head (c6b8459) 84.70%.

Additional details and impacted files

@@                    Coverage Diff                     @@
##           feature/model-registry     #297      +/-   ##
==========================================================
+ Coverage                   84.30%   84.70%   +0.39%     
==========================================================
  Files                         121      121              
  Lines                        2453     2458       +5     
  Branches                      517      493      -24     
==========================================================
+ Hits                         2068     2082      +14     
+ Misses                        292      283       -9     
  Partials                       93       93              

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