textproc/p5-Number-Format-Metric: Add new port

Format number with metric prefix.

format_metric(14 , {base=>10}); # => "14"
format_metric(12000 , {base=> 2, precision=>1}); # => "11.7K"
format_metric(12000 , {base=>10, precision=>1}); # => "11.7Ki"
format_metric(-0.0017, {base=>10}); # => "1.7m"

PR: 259078
MFH: 2021Q4 (required to fix missing dependency issue)