Update info on index

Update dependencies, incl. eleventy-plugin-rss

Merge pull request #16 from KiwiKilian/feature/eleventy-3-esm

Upgrade to Eleventy v3, ESM and Vite v5

Update README and version number

Move public folder to root, apply patch for eleventy-plugin-vite

Update to Vite 3.0, Eleventy v2.0.0-canary.13, eleventy-plugin-vite v…

…2.0.0-canary.1

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