Ignore line numbers

[fishpowered]

When working with a big team on a legacy code base with millions of lines of code, having line numbers in the baseline doesn't really work well. I added --ignore-line-numbers to the generation of the baseline and when running tests but the line numbers still exist in the baseline and you still get constant merge conflicts.

Would you consider changing it to a count of error types, the same way phpstan does?

Thanks