docs: update landing page for v2

[brenelz]

Summary

• announce the Solid and SolidStart v2 release status in the hero
• update the deployment example for Vite deployment plugins
• refresh the composable framework diagram for Vite, deployment plugins, and router choices

Testing

• pnpm exec oxfmt --check apps/landing-page/src/components/sections/deploy-anywhere.tsx apps/landing-page/src/components/sections/hero.tsx apps/landing-page/src/components/sections/meta-framework.tsx
• pnpm lp:build

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commit: 7b04524