chore: update docs with create-fedimint-app script information

[alexlwn123]

• Updated getting started docs to include create-fedimint-app script instructions.
• Added vitepress-plugin-group-icons to get nice icons on files names.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 2c3adb4

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[socket-security]

New and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher

🚮 Removed packages: npm/[email protected], npm/[email protected], npm/[email protected]

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[github-actions]

Size Change: 0 B

Total Size: 7.48 MB

ℹ️ View Unchanged

Filename	Size
packages/core-web/dist/index.js	2.7 kB
packages/core-web/dist/worker.js	679 B
packages/create-fedimint-app/dist/index.mjs	17.1 kB
packages/react/dist/index.js	1.29 kB
packages/wasm-bundler/fedimint_client_wasm_bg.wasm	3.73 MB
packages/wasm-web/fedimint_client_wasm_bg.wasm	3.73 MB

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