[ARROW-625] [C++] Add time unit to TimeType::ToString

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.3.0
• Component/s: C++
• External issue URL: https://github.com/apache/arrow/issues/16253
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 13/Mar/17 21:05
• Updated: 11/Jan/23 07:09
• Resolved: 14/Mar/17 15:47

Description

This was just added for TimestampType, so do the same thing for TimeType