chore: ship less files to users with the cli

[juliusmarminge]

no need to ship type declarations or src files to users. the CLI already includes a lot of files as is

[changeset-bot]

⚠️ No Changeset found

Latest commit: 091d3fd

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[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
t3-upgrade	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 11, 2023 10:17pm

1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
create-t3-app	⬜️ Ignored (Inspect)	Visit Preview		Sep 11, 2023 10:17pm

[github-actions]

⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟢 Performance	99
🟢 Accessibility	100
🟢 Best practices	100
🟢 SEO	100
🔴 PWA	30

Lighthouse ran on https://create-t3-app-git-minimize-bundle-t3-oss.vercel.app/

[github-actions]

A new create-t3-app prerelease is available for testing. You can install this latest build in your project with:

pnpm create [email protected]

[juliusmarminge]

Before:
https://www.npmjs.com/package/create-t3-app/v/7.20.0?activeTab=code

After:
https://www.npmjs.com/package/create-t3-app/v/7.20.1-beta.a0841b7?activeTab=code