changed gitignore handling

[mzuenni]

#305

[mpsijm]

Thanks for simplifying the implementation, but I think I still don't like having (redundant) .gitignore files in the root of my problem directory 😅 I think we need more opinions here 😛

[mzuenni]

it should be easy to change now ^^ (as long as the gitignore stays in the problem folder). I just hope that i found all places that needed a change

[mpsijm]

it should be easy to change now ^^ (as long as the gitignore stays in the problem folder).

But it's not easy to change when I don't have a .gitignore file in my problem folders, and BAPCtools keeps regenerating it 😅

[mzuenni]

I meant it should be easy to change the code if we decide for the self ignoring gitignore in /data.

[RagnarGrootKoerkamp]

I also like putting this in the problem .gitignore. Indeed it's a bit redundant but I agree it's more a problem than a contest setting, and anyway these files are automatically generated so there is little overhead.
Also, adding problem/.gitignore is a clear indication to the user that we are ignoring the generated cases, since this file will be part of git status and then be committed. A self-ignoring problem/data/.gitignore is much more hidden to the user, and they may be surprised why cases are not being comitted.

So this settles A1 and B2 from #305. That only leaves the cleanup of unknown-file handling (C).