Add Woo rebrand signup page

[ilyasfoo]

Related to #96946

Proposed Changes

• Adds woocommerce/rebrand-2-0 feature flag
• Adds CSS modifications for Woo rebrand 2.0
• Minor copy change (not under feature flag)

Testing Instructions

• In your development.json, set woocommerce/rebrand-2-0 to true
• Run yarn start
• In an incognito window, go to this URL
• Observe the changes match with Figma tp2u3Nk9arcpeNMZcylNG4-fi-271_8254

Optional

• Set the feature flag to false
• Re-run yarn start
• In an incognito window, go to this URL
• Observe the page is not affected by branding changes

After:

Figma:

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
  • For UI changes, have we tested the change in various languages (for example, ES, PT, FR, or DE)? The length of text and words vary significantly between languages.
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-126147

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-126147&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-126147&env=a8c-for-agencies

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

App Entrypoints (~84 bytes added 📈 [gzipped])

name           parsed_size           gzip_size
entry-stepper       +404 B  (+0.0%)      +85 B  (+0.0%)
entry-main          +404 B  (+0.0%)      +85 B  (+0.0%)
entry-login         +404 B  (+0.0%)      +84 B  (+0.0%)

Common code that is always downloaded and parsed every time the app is loaded, no matter which route is used.

Sections (~3 bytes removed 📉 [gzipped])

name             parsed_size           gzip_size
jetpack-connect        -11 B  (-0.0%)       -3 B  (-0.0%)
accept-invite          -11 B  (-0.0%)       -3 B  (-0.0%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Async-loaded Components (~3 bytes removed 📉 [gzipped])

name                          parsed_size           gzip_size
async-load-signup-steps-user        -11 B  (-0.0%)       -3 B  (-0.0%)

React components that are loaded lazily, when a certain part of UI is displayed for the first time.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[ilyasfoo]

This change is expected to be outside of feature flag

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• blaze-dashboard
• notifications
• odyssey-stats
• wpcom-block-editor

To test WordPress.com changes, run install-plugin.sh $pluginSlug update/96946-woo-rebrand-signup-page on your sandbox.

[moon0326]

LGTM and tested well 👍 🚀