Add meta tests for all new rules

[andylolz]

I just tried adding meta tests (#59; #60; #62) for a couple of the new rules (#55; #56; #54), and found multiple bugs for each. So:

• It’s probably worth adding new tests to meta_tests.sh for any new rules added. It’s probably not strictly correct, because the meta tests are for test coverage, not rule coverage, but it is useful.
• It may be worth covering the rulesets (or at least the standard ruleset).

[samuele-mattiuzzo]

@andylolz we'll look into this at the end of this sprint (Monday, basically), so I might ping you about this if there's any more work needed 👍

[akmiller01]

Looks like quite a bit of work was done to this file shortly after Sam's comment: https://github.com/IATI/IATI-Rulesets/commits/version-2.02/meta_tests.sh

And tests are now run with GH Actions: https://github.com/IATI/IATI-Rulesets/blob/version-2.03/.github/workflows/main.yml#L52

So I think this issue can be closed unless there's a facet I'm missing @andylolz ?