add claude pr review skills

[pascal-roth]

Description

# Single issue
claude "Run the issue triage workflow for issue #1234"

# All open bugs
claude "Run the issue triage workflow for all open bug issues"

Type of change

• New feature (non-breaking change which adds functionality)

Checklist

• I have read and understood the contribution guidelines
• I have run the pre-commit checks with ./isaaclab.sh --format
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have updated the changelog and the corresponding version in the extension's config/extension.toml file
• I have added my name to the CONTRIBUTORS.md or my name already exists there

[ooctipus]

@xteo

Maybe review this as well, how it could be integrated or potential merge conflict?