added 8 new exercises

[kapitaali]

Hi,

this is my first pull request ever, so if anything goes wrong, that might be the reason.

WHAT HAS BEEN DONE

I have added 8 new exercises to COBOL track: acronym, all-your-base, atbash-cipherr, binary, circular-buffer, complex-numbers, matching-brackets, pascals-triangle.

These exercises have been solved by me, solutions are found in the respective proof.ci.cob files.

WHAT IS MISSING

I could have appreciated some sort of guidelines as to what is expected when doing a pull request, like if you would need just the .cob and .cut files (which the pull request was about to contain before I realized that there were hidden directories with solutions) or do you need a pull request submitter to solve the exercises. I tried to look around and was not able to find anything. Luckily I did them myself.

[github-actions]

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[ErikSchierboom]

@kapitaali Thanks for the PR! It's quite a big PR, so it might take a little while for me to review. I'll come back to this later.

[axtens]

Also reviewing. My first reaction to Acronym is that while the proof.ci.cob may work, it's not particularly idiomatic cobol. If acronym were already a task, then the provided solution would do as a first attempt. I'd then encourage the student to look into better string length routines, use of indexing into strings etc.

[axtens]

It does, though, raise the question: is the proof.ci.cob supposed to be "good" cobol or just something-that-works?

[ErikSchierboom]

just something-that-works?

It's this

[ErikSchierboom]

Wonderful work! There's a couple of things that need to be fixed before this can be merged:

1. Fix the configlet issue. All of the newly added exercises need to have an entry in the root config.json file's exercises.practice array: https://github.com/exercism/cobol/blob/main/config.json#L29 See https://exercism.org/docs/building/tracks/config-json#h-practice-exercises for more information.
2. CI needs to be fixed: https://github.com/exercism/cobol/actions/runs/6729910587/job/18291621996?pr=105 It looks like not all of the proofs pass all the tests.

Once these things have been fixed, we can merge this.

Side note: if you'd like to add more exercises after this, I would suggest doing one PR per exercise, as that makes reviewing easier and increases the chance of the PR being merged sooner.

[ErikSchierboom]

Just one more configlet error:

JSON parsing error:
/home/runner/work/cobol/cobol/exercises/practice/all-your-base/.meta/config.json(21, 1) Error: found trailing comma. } or key/value pair expected

[kapitaali]

argh :D

[ErikSchierboom]

You happy with this @axtens?

[axtens]

I am very happy to see the track expanded in this way. I agree with @ErikSchierboom that submitting extra tasks individually does help with the approval process. Apart from that, approved!

[ErikSchierboom]

Merged! Thanks

[iHiD]

@kapitaali Thank you :)