Add format and test scripts

[adam-narozniak]

Issue

The baseline created using the updated way doesn't have the format and test scripts. Additionally, they differ slightly - each has its own pyproject.toml

Description

The test scripts include:

• structure (whether they follow the baseline_template structure)
• formatting (similar to the main flwr code)

Related issues/PRs

NA

Proposal

Create a script that checks a single baseline.

Explanation

Baselines have to be checked individually since they have different pyproject.tomls. Additionally, check performed on-baseline-basis will help to run only the CI test for the baseline that was modified (all baseline checks, according to me is not feasible to singe the env setup for a single baseline is ~3 minutes, and we plan on having 50 baselines).

The test and format work as follows:
./dev/test-baseline.sh

• Structure tests might be relaxed (in rare cases) by adding the directory to the structure_exceptions=() in test-baseline-structure.sh
• The unit tests are executed only when they are present.
  python -m pytest . || ([ $? -eq 5 ] || [ $? -eq 0 ])
  The 5 return status means: no test detected. The 0 return status means correctly executed. We accept both.

[jafermarq]

@adam-narozniak @danieljanes should we include this before we launch SoR? at the very least the formatting script?

[adam-narozniak]

@jafermarq I think we should add it, now it's ready. There will be a next PR that will automatically test only the changed baseline in the CI, but ppl can use that locally for testing and formatting.

[jafermarq]

@adam-narozniak, i feel like we should provide instructions for people to know how to run the format-baseline.sh? For example something like.

# the top level directory for baselines run after sourcing your environment:
./dev/format_baseline.sh <name-of-you-baseline>

Also, i think we need to add ruff to the pyproject.toml in the baseline? and also, how about doing chmod +x to the script? so people can just run it directly?

Maybe you can do the chmod +x thing and i'll create another PR for changes to the baseline-template. 👍