v0.1.0

Add repo-glowup Claude Skill and initial files

Initial project files for the repo-glowup Claude Skill: SKILL.md (skill definition + workflow), scripts/scan_repo.py (objective repo scanner), references (scoring rubric, README and launch patterns), assets/readme-template.md, README.md, CONTRIBUTING.md, LICENSE (MIT), .github CI workflow (validates SKILL frontmatter + lints/runs scanner), and an issue template. Sets up project structure, guardrails, and the core tooling for auditing and rewriting READMEs.