Convert arc feature to use PhutilConsoleTable.
Summary: Fixes T5110. PhutilConsoleTable handles Unicode characters and can display a decent-looking table.
Test Plan:
Reviewers: epriestley, Blessed Reviewers
Reviewed By: epriestley, Blessed Reviewers
Subscribers: epriestley, Korvin
Maniphest Tasks: T5110
Differential Revision: https://secure.phabricator.com/D9602