docs: add LASCON 2024 to showcases

[hdm]

Hello and thanks for making Slidev! This PR adds a recent presentation to the showcases file.

[netlify]

✅ Deploy Preview for slidev ready!

Name	Link
🔨 Latest commit	43817e3
🔍 Latest deploy log	https://app.netlify.com/sites/slidev/deploys/671eca5fa80f260008eab12c
😎 Deploy Preview	https://deploy-preview-1916--slidev.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[pkg-pr-new]

Open in Stackblitz

create-slidev

pnpm add https://pkg.pr.new/slidevjs/slidev/create-slidev@1916

@slidev/client

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/client@1916

@slidev/parser

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/parser@1916

create-slidev-theme

pnpm add https://pkg.pr.new/slidevjs/slidev/create-slidev-theme@1916

@slidev/cli

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/cli@1916

@slidev/types

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/types@1916

commit: 43817e3