Multiple dirs class set

[hgraca]

Currently, if we want to include two folders from the project root, we need to add the root of the project and then exclude everything we dont want to include, and remember to add a folder to the config if we add a new folder to the project root.

With the MultipleDirClassSet we can specify just the directories we want it to scan,
removing all cruft from our config.

[jdreesen]

How about refactoring ClassSet so that it can handle multiple directories instead?

The constructor is private so we could change it (without BC break) and add a second static constructor fromDirs(string ...$directoryList). It shouldn't be a breaking change, right?

[hgraca]

Yes! That was my first approach, but I found some reason to do it differently... Dont remember what it was though. :(

We can even change the named constructor without a BC break.

my only concern here is with the getDir() method, cozz its return will not be atomic anymore, but on the other hand we are only using it for writing it on the screen.

Anyway, as I can't see anymore what drove me to this approach, I will simplify as you suggest.

[hgraca]

@jdreesen done, and force pushed

[codecov-commenter]

Codecov Report

Merging #400 (f27b65a) into main (976c200) will not change coverage.
The diff coverage is 100.00%.

❗ Your organization is not using the GitHub App Integration. As a result you may experience degraded service beginning May 15th. Please install the Github App Integration for your organization. Read more.

@@            Coverage Diff            @@
##               main     #400   +/-   ##
=========================================
  Coverage     94.33%   94.33%           
  Complexity      571      571           
=========================================
  Files            67       67           
  Lines          1500     1500           
=========================================
  Hits           1415     1415           
  Misses           85       85           

Files Changed	Coverage Δ
src/ClassSet.php	100.00% <100.00%> (ø)

[AlessandroMinoccheri]

@hgraca Before approving, can you please add something to the readme file :) ?

[hgraca]

@AlessandroMinoccheri done