[Do not merge - draft] chore: Add newrelic-ios-agent mdx and json metadata files

[cdillard-NewRelic]

This PR adds two metadata files based on instructions:

• src/data/project-main-content/newrelic-newrelic-ios-agent.mdx
• src/data/projects/newrelic-newrelic-ios-agent.json It will be ready to merge once we've open sourced the iOS agent github repo.

[gatsby-cloud[bot]]

:white_check_mark: opensource-website-develop deploy preview ready

• Deploy preview
• Build logs · 2m build time
• Performance 33 :orange_circle: · Accessibility 82 :orange_circle: · Best Practices 92 :green_heart: · SEO 92 :green_heart: — View full report

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be automatically closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically closed because it was a stale issue that had no recent activity. Thank you for your contributions.