feat(psalm): Add all stubs

[provokateurin]

I tried to fix a bunch of the errors that were uncovered by adding the proper stubs, but didn't manage to fix all of them since I don't understand everything yet.
I also don't understand why psalm doesn't properly understand that CoreQueryBuilder implements IQueryBuilder, but the change makes it work 🤷‍♀️

[come-nc]

Why does it need such a recent PHP?

composer run psalm

> psalm.phar --threads=1 --no-cache

Box Requirements Checker
========================

> Using PHP 8.3.6
> PHP is using the following php.ini file:
  /etc/php/8.3/cli/php.ini

> Checking Box requirements:
  E..................

                                                                                                                                                                                                                   
 [ERROR] Your system is not ready to run the application.                                                                                                                                                          
                                                                                                                                                                                                                   

Fix the following mandatory requirements:
=========================================

 * The application requires the version "~8.1.31 || ~8.2.27 || ~8.3.16 || ~8.4.3" or greater.

Script psalm.phar --threads=1 --no-cache handling the psalm event returned with error code 1

[provokateurin]

Why does it need such a recent PHP?

Yeah it's a bit weird that the version requirements are so strict (maybe for security reasons, but that's not really psalms task?)

[come-nc]

I would prefer if the PHP version thing is solved and I can run the analysis locally.
Also the CI will have trouble I expect as it does not always have the last PHP?
And would be better if the IQueryBuilder thing is properly fixed as well.

Not gonna block this PR though, it’s still a step forward.

[provokateurin]

I'll try to improve this PR, but I already gave up on the IQueryBuilder thing because there is no trace of what is wrong 🤷‍♀️