feat: Add wrangler pages project list

[sidharthachatterjee]

This adds a wrangler pages project list command that lets you list your Cloudflare Pages for an account.

It reuses the requireAuth helper (which I've moved into utils) to render an account selector.

Here is what it renders:

[changeset-bot]

🦋 Changeset detected

Latest commit: 659fd5a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
wrangler	Patch

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[github-actions]

A wrangler prerelease is available for testing. You can install this latest build in your project with:

npm install --save-dev https://prerelease-registry.developers.workers.dev/runs/2095938204/npm-package-wrangler-757

You can reference the automatically updated head of this PR with:

npm install --save-dev https://prerelease-registry.developers.workers.dev/prs/757/npm-package-wrangler-757

Or you can use npx with this latest build directly:

npx https://prerelease-registry.developers.workers.dev/runs/2095938204/npm-package-wrangler-757 dev path/to/script.js

[threepointone]

Could you add some tests as well?

[GregBrimble]

Can we get pagination or search on this project list as well? Quite possible people have more than whatever we serve by the default.