[file] Improve file(1) util to support modern Linux and MacOS binary db #144
Description
Modern Linux and BSD (MacOS) version of file(1) use a binary database as the source of varied file type/format data.
The current posixutils version of file is POSIX compliant, supporting the text input format, but does not do anything useful on modern OS.
Goal: Extend file to support Linux and BSD binary file format databases.
Some early work can be found in PR #86.