Added guild information onto the engineering website

[aaronrussellHO]

Is this pull request a content or a code change? (Please fill in the relevant section and delete the other)

Code change

I can confirm:

Accessibility considerations

• [X] Please review the accessibility checks for layout changes.

• [X] This change will not change layouts, page structures or anything else that might impact accessibility

• Content change

• [X] Please review the accessibility checks for content changes.

I can confirm:

• [X] Content does not include any code or configuration changes (excluding frontmatter information)
• [X] Content meets the content standards e.g. Writing a principle and Writing a standard
• [X] Content is suitable to open source, i.e.:
  • Content does not relate to unreleased gov policy
  • Content does not refer to anti-fraud mechanisms
  • Content does not include sensitive business logic