fix Aqua test

[ogauthe]

This PR mimics ITensor/FusionTensors.jl#3:

• remove test/Project.toml
• enable Aqua test
• not sure of this: remove sources from Project.toml. This was needed to get passing tests.

With this PR, ] test SymmetrySectors passes all test in the local project.

[ogauthe]

Hmm, looks like I missed something. @lkdvos do you have a clue?

[lkdvos]

I'll have a look later, but it seems like we're both doing the same thing: #3

[ogauthe]

Indeed, I wrote this PR to fix tests in #4 but #3 may already fix them. I will close this if #4 test pass once #3 is merged.

[lkdvos]

Sorry, I was reading this on my phone this morning and didn't really see what was going on. Indeed, the problems should be fixed with the changes in that other PR.

In case you wanted to know in more detail, the issue here is that this version of the CI test script is not yet using the centralized one we have in ITensors/ITensorActions. The main difference is that the buildpkg substep takes an (optional) argument to supply additional registries that you want it to install, which here is required for the CI to find the LabelledNumbers.jl package. The relevant line is:
https://github.com/ogauthe/SymmetrySectors.jl/blob/b501810d74bcb1646763fe55b63f5ab67120fab8/.github/workflows/CI.yml#L41
compared to
https://github.com/ITensor/ITensorActions/blob/617bb0004c5a4704e6db4f6372e07f37a79f57d8/.github/workflows/Tests.yml#L103-L106

[ogauthe]

No more needed thanks to #3