feat(#60): add RSS support

[ZoeBijl]

Basic implementation of the official RSS plugin. Looks for the posts collection by default.

Fixes #60

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details
npm/@11ty/eleventy-plugin-rss	2.0.2	🟢 3.4	Details Check Score Reason Code-Review ⚠️ 0 Found 1/29 approved changesets -- score normalized to 0 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Binary-Artifacts 🟢 10 no binaries found in the repo Maintained ⚠️ 0 0 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 0 Packaging ⚠️ -1 packaging workflow not detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Pinned-Dependencies ⚠️ 0 dependency not pinned by hash detected -- score normalized to 0 CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Vulnerabilities 🟢 10 0 existing vulnerabilities detected Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Signed-Releases ⚠️ -1 no releases found Branch-Protection ⚠️ 0 branch protection not enabled on development/release branches Security-Policy ⚠️ 0 security policy file not detected SAST ⚠️ 0 SAST tool is not run on all commits -- score normalized to 0
npm/@11ty/eleventy-plugin-rss	^2.0.2	🟢 3.4	Details Check Score Reason Code-Review ⚠️ 0 Found 1/29 approved changesets -- score normalized to 0 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Binary-Artifacts 🟢 10 no binaries found in the repo Maintained ⚠️ 0 0 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 0 Packaging ⚠️ -1 packaging workflow not detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Pinned-Dependencies ⚠️ 0 dependency not pinned by hash detected -- score normalized to 0 CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Vulnerabilities 🟢 10 0 existing vulnerabilities detected Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Signed-Releases ⚠️ -1 no releases found Branch-Protection ⚠️ 0 branch protection not enabled on development/release branches Security-Policy ⚠️ 0 security policy file not detected SAST ⚠️ 0 SAST tool is not run on all commits -- score normalized to 0

Scanned Files

• package-lock.json
• package.json