Update Examples generation script to use up-to-date version

Increasing Access

The editor makes getting started easier by surfacing examples from the main dropdown menu:

Feature enhancement details

Currently, the examples in https://editor.p5js.org/p5/sketches are built from the archive site. Instead, they should match the examples on https://p5js.org/, and include the updated attribution block as it appears on the website. (https://github.com/processing/p5.js-website/tree/main/src/content/examples or https://p5js.org/examples/)

Addressing this would include:

• Updating the script https://github.com/processing/p5.js-web-editor/blob/c5cdecbe3262bc7e193f4d0fea558039297dbfc5/server/scripts/examples.js#L33 to fetch from the accurate repository
• Optionally, if it makes more sense, add a PR to p5.js-website that introduces a machine readable json version of the examples. For example, the p5.js-website provides https://p5js.org/reference/data.json - so a new machine readable resource could be added as "https://p5js.org/examples/data.json"
• In any case: the updated script should use the version of the example that corresponds to the current main site. This way, when we switch to p5.js v2, it is easy to update the examples to match all the v2 updates

Start with server/scripts/examples.js around the referenced fetch logic, then compare the current examples in the p5.js website repository and its data.json pattern. Determine which source can provide the current examples and attribution block, and update the generation flow so its output matches the main site and can be updated for p5.js v2.