feat: use customer access tokens for customer logins

[chanceaclark]

What/Why?

Uses the new approach of using Customer Access Tokens (CATs) when login in as a customer. This change utilized the Storefront API Token (APIT) instead of the Storefront Customer Impersonation Token (CIT) to authenticate requests as CATs will only be generated using a APIT.

[!TIP] Reviewing by commit will be helpful.

Testing

Every commit was individually tested so that Catalyst could keep working depending on the state. If need be, try to roll back to a previous commit if not working correctly.

Releasing

1. Cut a release before merging
2. Merge this PR
3. Immediately cut another release

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 8142e79737423b1c69f665412484c2d41c55dfc0

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

This PR includes changesets to release 3 packages

Name	Type
@bigcommerce/catalyst-client	Minor
@bigcommerce/catalyst-core	Minor
@bigcommerce/create-catalyst	Minor

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
catalyst-latest	✅ Ready (Inspect)	Visit Preview		Nov 4, 2024 5:00pm

5 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
catalyst-1millionproducts-store	⬜️ Ignored (Inspect)	Visit Preview		Nov 4, 2024 5:00pm
catalyst-au	⬜️ Ignored (Inspect)	Visit Preview		Nov 4, 2024 5:00pm
catalyst-test-store	⬜️ Ignored (Inspect)	Visit Preview		Nov 4, 2024 5:00pm
catalyst-uk	⬜️ Ignored (Inspect)	Visit Preview		Nov 4, 2024 5:00pm
catalyst-unstable	⬜️ Ignored (Inspect)	Visit Preview		Nov 4, 2024 5:00pm

[github-actions[bot]]

⚡️🏠 Lighthouse report

Lighthouse ran against https://catalyst-latest-3wv1owqbw-bigcommerce-platform.vercel.app

🖥️ Desktop

We ran Lighthouse against the changes on a desktop and produced this report. Here's the summary:

Category	Score
🟠 Performance	80
🟢 Accessibility	96
🟢 Best practices	100
🟠 SEO	82

📱 Mobile

We ran Lighthouse against the changes on a mobile and produced this report. Here's the summary:

Category	Score
🟢 Performance	96
🟢 Accessibility	96
🟢 Best practices	100
🟠 SEO	85