Changes proposed in this pull request:

The new database factory system is added, it was copied from the Laravel Eloquent modern factories https://laravel.com/docs/9.x/database-testing Everything except Factory relationships has been implemented and works for Doctrine.

The new system is object-oriented, easily extensible, doesn't use any magic files and supports IDE autocompletion.

Fixes #470

Changes to be done

Please let me know if this PR looks good, and I'll add documentation (actually copy-paste it from the Laravel).

The current implementation of database factories

While Laravel moved the old factory system into another package laravel/legacy-factories, we might leave it for backward compatibility as both systems can coexist without any problem.

Codecov Report

Merging #526 (3b4b43a) into 1.8 (9eea57d) will increase coverage by 0.82%. The diff coverage is 66.28%.

@@             Coverage Diff              @@
##                1.8     #526      +/-   ##
============================================
+ Coverage     54.49%   55.32%   +0.82%     
- Complexity      824      889      +65     
============================================
  Files           101      103       +2     
  Lines          2325     2500     +175     
============================================
+ Hits           1267     1383     +116     
- Misses         1058     1117      +59     

Impacted Files	Coverage Δ
src/Testing/Factories/Factory.php	66.27% <66.27%> (ø)
src/Testing/Factories/HasEntityFactory.php	66.66% <66.66%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

Looks good to me

Please let me know if you have any questions or need any assistance from me.

Any news regarding this? should be awesome to have this running....

Hey all, I'm new to laravel-doctrine but love having good testing utilities. Is there anything we can do to help move this along?