feat(lucide-lit): added lucide-lit package and appropriate documents

[GyeongHoKim]

Description

Adds lucide-lit, a Lit (LitElement) package that registers each icon as a custom element (e.g. <lucide-camera>).
Although built with Lit, it is usable regardless of framework since it exposes each icon as a standard custom element.

Also includes documentation on lucide.dev (Lit guide, package reference, sidebar, installation hints), CI (.github/workflows/lucide-lit.yml), release matrix updates, root README package table row, and framework logo (docs/public/framework-logos/lit.svg — emblem from the official Lit logo).

What changed

• New package under packages/lucide-lit/ (build, tests, createLucideIcon, Icon).
• Docs: docs/guide/lit/, docs/guide/packages/lucide-lit.md, VitePress wiring, packageData, etc.
• CI workflow to test lucide-lit and release lucide-lit.
• README: Packages table + Lit logo path.

How to test

pnpm install
pnpm --filter lucide-lit build
pnpm --filter lucide-lit test
pnpm lint

I validated this with a Vite v7 + Lit v3.2 + TypeScript app via yalc and confirmed the package works end-to-end.
I also tested the CI workflow with act using the act-latest image.

Notes for reviewers

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Before submitting

• I’ve read the Contribution Guidelines.
• I’ve checked for an existing PR that solves the same issue.