feat(v2): skip dependency install on docusaurus init

[kumaraditya303]

Motivation

Originally from #3450, support to skip install for project scaffolding.

Have you read the Contributing Guidelines on pull requests?

Yes

Test Plan

Not required

Related PRs

None

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[github-actions]

Size Change: +9 B (0%)

Total Size: 156 kB

ℹ️ View Unchanged

Filename	Size	Change
website/build/blog/2017/12/14/introducing-docusaurus/index.html	20.7 kB	+2 B (0%)
website/build/docs/introduction/index.html	180 B	0 B
website/build/index.html	5.82 kB	0 B
website/build/main.********.js	112 kB	+7 B (0%)
website/build/styles.********.css	17.6 kB	0 B

_{compressed-size-action}

[netlify]

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[facebook-github-bot]

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[github-actions]

⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟠 Performance	85
🟢 Accessibility	99
🟢 Best practices	100
🟢 SEO	100
🟢 PWA	95

Lighthouse ran on https://deploy-preview-3986--docusaurus-2.netlify.app/classic/

[slorber]

LGTM thanks 👍