Add p5.js 2.x Project Generator extension to libraries

[IrtizaNasar]

Adds the p5.js 2.x Project Generator VSCode extension to the libraries section.

This extension:

• Generates new p5.js 2.0 projects with clean, minimal setup
• Provides online/offline library options
• Includes autocomplete, IntelliSense, and parameter hints for p5.js functions
• Perfect for artists, designers, educators, and creative coders

Changes made:

• Added new "integrations" category to config.ts
• Created p5js-project-generator.yaml with extension details
• Added featured image for the extension

Extension links:

• GitHub: https://github.com/IrtizaNasar/p5-2.vscode
• VSCode Marketplace: https://marketplace.visualstudio.com/items?itemName=Irti.p5js-project-generator