docs: add lit example

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Latest commit: 06165070994407fa7b20cc8d2841e44ff07a0237

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commit: 0616507

pnpm add https://pkg.pr.new/ocavue/astrobook@40

pnpm add https://pkg.pr.new/ocavue/astrobook/@astrobook/core@40

pnpm add https://pkg.pr.new/ocavue/astrobook/@astrobook/types@40

pnpm add https://pkg.pr.new/ocavue/astrobook/@astrobook/ui@40

Open in Stackblitz • astrobook-playground