Adds puppeteer as a dev dependency

[cypherean]

Adds puppeteer as a dev dependency rather than a direct dependency.
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[gitpod-io]

[cypherean]

@jywarren @sagarpreet-chadha please have a look.

[sagarpreet-chadha]

Add eslint, husky, lint-staged also as dev dependency

[jywarren]

Great work! Thanks!