Generated Propel2 models kill phpstan analysis performance

[matweew]

All the time when Propel classes are used in your code or just mentioned as phpdoc @return,
the code generated by Propel2 slowdowns phpstan static analysis process very much.

Read the conversation on this issue phpstan/phpstan#4581 for more details.

As I understood the problematic code is in $Model$Query classes and a lot of phpdocs @method inside.

A possible solution (not checked) is to generate native methods of the class instead of only @method annotations.

[dereuromark]

We could make a PR to test this and see if that solves the issue.