Change context menu to horizontal layout

[schu96]

Added some CSS styling changes to change the alignment from vertical to horizontal layout for highlight menu. Includes a new ... menu option that changes the options for potential features

[codecov]

Codecov Report

❌ Patch coverage is 5.55556% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.41%. Comparing base (65d2212) to head (21622d8).

Files with missing lines	Patch %	Lines
src/util/TextSelectionManager.js	5.55%	17 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1564      +/-   ##
==========================================
- Coverage   63.53%   63.41%   -0.12%     
==========================================
  Files          67       67              
  Lines        6197     6211      +14     
  Branches     1376     1377       +1     
==========================================
+ Hits         3937     3939       +2     
- Misses       2221     2233      +12     
  Partials       39       39              

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