Align the argument required/default specifier using tabwriter

[FollowTheProcess]

• Align flag required/default in the table
• Change golines to 120

Summary

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.60%. Comparing base (01808e3) to head (90467d6).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #127   +/-   ##
=======================================
  Coverage   91.60%   91.60%           
=======================================
  Files           6        6           
  Lines        1299     1299           
=======================================
  Hits         1190     1190           
  Misses         77       77           
  Partials       32       32           

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