Add ignorelist to pack command.

[obriat]

Overview

This pull request:

• Fixes a bug
• Adds a feature
• Breaks backwards compatibility
• [x ] Has tests that cover changes
• [ x] Adds or fixes documentation

Summary

Related to #961, allows to filter patterns when creating an archive.

Description

Files or folders could be excluded by using patterns, it's a good way to clean your package before delivery without touching you project folder tree.

<?php
$this->taskPack(<archiveFile>)
->add('project') 
->exclude(['dir/*.zip', '*.md'])
->run();

Good to know :
Zip allows regexp, glob or string, @see https://symfony.com/doc/current/components/finder.html#file-name.
Tar, gz and bz2 allow only regexp @see https://pear.php.net/package/Archive_Tar/docs/latest/Archive_Tar/Archive_Tar.html#methodsetIgnoreList.

[greg-1-anderson]

LGTM, address / answer two minor concerns & this should be good to merge.

[greg-1-anderson]

I didn't notice before, but it looks like you hand-modified the Archive.md file, which is a generated file. To update the documentation in a persistent way, add the new instructions to the top of the file (e.g. Pack.php) and run ./robo docs to re-generate the documentation.

[obriat]

Ok, I fix the doc by adding the correct comments and running robo docs.
I rewrote the git history to have cleaner comments, but I now realise that's maybe not the correct way if you want to review my changes... (by the way I fix an example expression)

[greg-1-anderson]

It's usually better to not rewrite history in a PR; I always squash-and-merge when done anyway. This PR is short enough that it wasn't an issue, though.

Thank you for contributing this.