Add a TableEmptyMessage attribute

[greg-1-anderson]

Disposition

This pull request:

• Fixes a bug
• Adds a feature
• Breaks backwards compatibility
• Has tests that cover changes

Summary

Add a #[CLI\TableEmptyMessage] attribute that allows commands to specify what message to print when the table is empty. Provide an empty string for message to print nothing.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.19%. Comparing base (e01152f) to head (173ca51).
Report is 2 commits behind head on 4.x.

❗ Current head 173ca51 differs from pull request most recent head 0ca3a27. Consider uploading reports for the commit 0ca3a27 to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##                4.x     #303   +/-   ##
=========================================
  Coverage     88.19%   88.19%           
  Complexity      781      781           
=========================================
  Files            46       46           
  Lines          2100     2100           
=========================================
  Hits           1852     1852           
  Misses          248      248           

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[weitzman]

LGTM