Feat/dev portal customizations

[tomek-labuk]

Description

Adds a signpost landing page for dev portal customizations.

• One question to be addressed here, is how do we link it to the main Dev Portal docs?
• If we're okay with the path: I'll update index accordingly

Preview Links

https://deploy-preview-2019--kongdeveloper.netlify.app/dev-portal/customizations/dev-portal-customizations/

Checklist

• Tested how-to docs. If not, note why here.
• All pages contain metadata.
• Any new docs link to existing docs.
• All autogenerated instructions render correctly (API, decK, Konnect, Kong Manager).
• Style guide (capitalized gateway entities, placeholder URLs) implemented correctly.
• Every page has a description entry in frontmatter.
• Add new pages to the product documentation index (if applicable).

[netlify]

✅ Deploy Preview for kongdeveloper ready!

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[cloudjumpercat]

Left a few suggestions. I also pushed a commit to add this to the Dev Portal landing page (I removed a link and added this one, so I thought a commit would be easier than explaining).

I'd like to see links to the customization landing page in the related links of the following pages:

• /dev-portal/pages-and-content/
• /dev-portal/custom-domains/
• /dev-portal/portal-customization/
• /dev-portal/portal-settings/

[tomek-labuk]

Left a few suggestions. I also pushed a commit to add this to the Dev Portal landing page (I removed a link and added this one, so I thought a commit would be easier than explaining).

I'd like to see links to the customization landing page in the related links of the following pages:

• /dev-portal/pages-and-content/
• /dev-portal/custom-domains/
• /dev-portal/portal-customization/
• /dev-portal/portal-settings/

@cloudjumpercat - I added links in these pages and split the cards into groups of 3 and 2 on the customizations landing page.

[cloudjumpercat]

LGTM! Just left one suggestion to fix one of the column_count.