[codex] add Rspack to project suggestions

[Sean-Kenneth-Doherty]

Summary

• add Rspack to the beginner project suggestions
• point the card at Rspack's GitHub /contribute page
• include the GitHub-hosted organization avatar and relevant web bundler tags

Addresses #1

Validation

• git diff --check
• imported projectList from src/data/projects.js and confirmed Rspack is present
• GITHUB_TOKEN=$(gh auth token) pnpm build
• generated dist/index.html contains the Rspack name, contribute link, avatar URL, and Good First Issue tag
• GitHub API confirms web-infra-dev/rspack is public, unarchived, enabled, and has an open good first issue
• https://github.com/web-infra-dev/rspack/contribute returns HTTP 200
• avatar URL returns HTTP 200 image/png

[Sean-Kenneth-Doherty]

Validation notes for this project addition:

• git diff --check passes
• imported projectList from src/data/projects.js and confirmed Rspack is present; project count is now 153 on this branch
• GITHUB_TOKEN=$(gh auth token) pnpm build passes
• generated dist/index.html contains the Rspack card name, /contribute link, avatar URL, and Good First Issue tag
• web-infra-dev/rspack is public, unarchived, enabled, and currently has an open good first issue via the repository issues API
• https://github.com/web-infra-dev/rspack/contribute returns HTTP 200
• avatar URL returns HTTP 200 image/png

[Sean-Kenneth-Doherty]

Closing this to reduce maintainer review noise from my project-suggestion-only PR batch. I am pruning these so the queue can focus on concrete bug, security, accessibility, and performance fixes.