Add Living Scene to Widgets

[yuki4266]

Adds Living Scene to the Widgets section, as discussed in #105.

It renders your profile README banner from your actual local weather: a scheduled GitHub Action asks Open-Meteo what the sky is doing at your coordinates, then redraws an animated SVG to match — six weather states, four seasons, and day/night variants that follow whichever theme the viewer has set.

• No account and no API key — Open-Meteo is unauthenticated.
• No backend to go down. The SVG is generated inside your own repo, so there is no service that can join the Outdated section later.
• No dependencies. One Python file, standard library only.
• Deterministic per (weather, season), with the last scene recorded, so unchanged weather produces no commit at all.

Running live on my profile.

Following CONTRIBUTING: added to the bottom of the Widgets category, in the ### N . [title](link) + description + 📍 For example: + image format. One entry, one PR, no other files touched.