Add semi-supervised STACAS (ssSTACAS) as new method component

[rcannood]

Describe your changes

Supersedes #59: that PR has "Allow edits from maintainers" disabled, so review changes couldn't be pushed to the fork branch. This branch retains all commits by @JGarnica22 and adds a few fixes on top.

From #59:

• Add methods/ss_stacas, the semi-supervised version of STACAS (Andreatta et al., 2024), which uses (partial or imperfect) cell type labels to preserve biological variation while correcting for batch effects.

Added on top:

• unpin the carmonalab/STACAS dependency -- viash test passes, and HEAD currently resolves to the same 2.4.1; this also matches methods/stacas
• add ss_stacas to the run_benchmark workflow
• revert unrelated changes to .vscode/settings.json and scripts/create_component/create_r_method.sh, and gitignore .vscode/
• bump the common submodule

Checklist before requesting a review

• I have performed a self-review of my code

• Check the correct box. Does this PR contain:

  • Breaking changes
  • New functionality
  • Major changes
  • Minor changes
  • Bug fixes

• Proposed changes are described in the CHANGELOG.md

• CI Tests succeed and look good!

Co-authored-by: Josep Garnica 61703467+JGarnica22@users.noreply.github.com