CNCFSD-1944 Flux Website Resources Page update

[nate-double-u]

https://cncfservicedesk.atlassian.net/browse/CNCFSD-1944

Help Flux update their website's Resources page:

• The website is hosted using Hugo CMS
• Repo: https://github.com/fluxcd/website
• Updated Resources page to list two types of resources
  • Videos
  • Articles
• Improve overall page styling
• Improve usability
  • add filters
  • resource type
  • year
  • Provide a timestamp

The Jira ticket linked above includes a HTML & CSS mockup.

[nate-double-u]

Related: https://github.com/fluxcd/website/pull/1693

[kingdonb]

@juozasg FYI & fluxcd/website#1693

[thisisobate]

Done!