[New Port Request] decNumber

[asfernandes]

Library name

decNumber

Library description

No response

Source repository URL

http://download.icu-project.org/files/decNumber/decNumber-icu-368.zip

Project homepage (if different from the source repository)

https://speleotrove.com/decimal/decnumber.html

Anything else that is useful to know when adding (such as optional features the library may have that should be included)

No response