detect the suite from a test path relative to the current working dir

[ctrl-f5]

Detect the suite from a test file or path relative to the current working directory.

This fixes the issue that the suite cant be detected when codeception.yml is in any subdirectory, and subsequently also fixes the issue when it's inside the tests directory, for which there was a single use case fix in place.

[samdark]

@Naktibalda worth merging master into this one and checking test results with GitHub actions.

[ctrl-f5]

@samdark updated with upstream, seems to run fine in the new actions setup!

[samdark]

It doesn't break current tests. That's good. It would be great to add some tests verifying the change.

[ctrl-f5]

It was basically already tested by CodeceptionYmlInTestsDirCest since that's one use case. I've also added a more convoluted test case with some more directories to traverse, based on how we use it in our projects.

[Naktibalda]

@ctrl-f5 Your change broke codecept run tests - it is fails with this error:

In Run.php line 545:

  Test file can't be matched

#6103

Could you fix it?

[Naktibalda]

I implemented patch, which will make your change to apply only if relative path is inside tests directory #6105