Add module: pcangsd/inbreeding

[ASendellPrice]

This PR adds a new module pcangsd/inbreeding for estimating per-sample inbreeding coefficients from genotype likelihoods using pcangsd.

PR checklist

Closes #12496

• This comment contains a description of changes (with reason).
• If you've fixed a bug or added code that should be tested, add tests!
• If you've added a new tool - have you followed the module conventions in the contribution docs
• If necessary, include test data in your PR.
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[erikrikarddaniel]

Again a few comments from Claude.

[ASendellPrice]

@erikrikarddaniel, thanks for reviewing the PR. Not sure what is going on with the CI checks, but a lot more checks are running this time round. Looks like many of these are for other modules?

[erikrikarddaniel]

@erikrikarddaniel, thanks for reviewing the PR. Not sure what is going on with the CI checks, but a lot more checks are running this time round. Looks like many of these are for other modules?

Strange. I have no idea, ask at Slack so @mashehu or someone can have a look.