Add template, pattern and styles for Enterprise page

[adamwoodnz]

Closes #150

Adds a template and pattern for the Enterprise page. Some custom styles have had to be added, mostly for the logo grid which changes layout significantly on mobile.

Remaining tasks:

• Prod quality images
• Escaping
• Arrow styling for last section
• Heading hierarchy
• A11y
• Lighthouse Perf and a11y tests

Props @bengreeley

Screenshots

Desktop	Tablet	Mobile

How to test the changes in this Pull Request:

1. Add an 'Enterprise' page with slug enterprise (an existing page may need to be deprecated in your site)
2. Rebuild the styles yarn workspace wporg-main-2022-theme build
3. Test the responsive layout

[adamwoodnz]

Updated screenshots below with constrained layout and 'Try WordPress' font size reduced to fit (99px, down from 120px), rather than using letter spacing.

@javierarce @panchovm please let me know what you think.

1600px	1320px (as designed)	Tablet	Mobile

[StevenDufresne]

This looks good. 👍

I do find that the "WordPress Enterprise" graphic gets blurry on my large desktop.

[fcoveram]

I have been trying to set up and run the PR in my local, but I couldn't. So instead of keep pining folks for help and delaying my comments, I will share feedback based on the screenshots shared. Sorry for jumping in late.

The page looks great across breakpoints, I just noticed the following in mobile:

1. Images in Features section are slightly bigger compared to the mockup.
2. Top and bottom paddings look tighter compared to the mockup.
3. Section headings, below Try WordPress action, look smaller. The mockup's style is Heading 5.

The font-size reduction in Try WordPress works well.

[adamwoodnz]

@panchovm thanks for the feedback!

3. Section headings, below Try WordPress action, look smaller. The mockup's style is Heading 5

We have a rule in the parent theme for all the redesigned sites which reduces the size of H5 headings from 26px to 20px on mobile: https://github.com/WordPress/wporg-parent-2021/blob/trunk/source/wp-content/themes/wporg-parent-2021/theme.json#L334

Does this rule need to be adjusted? If it's not intended to be applied globally, we could specifically resize the other places it's applied, on the Download pages:

'Everything you need to set up your site just the way you want it.'

'Number of WordPress 6.1 downloads'

I have reduced the size of the Features icons to match the design (now 58px high), and increased the padding on the header and features sections as they seemed the furthest off. Again these paddings are controlled globally and clamped on mobile, so to some degree we try to go with these settings that have been developed on other pages.

[fcoveram]

The change looks great. We should keep consistency across the site, so your approach is perfect.

Thanks for the work ✨