POC - Regex rewrites

[shaun-nx]

Acceptance Criteria for POC

• Determine is same regex validation exists in regular Ingress
• How regex rewrite is implemented in VS/VSR
• Can regex rewrites be added to ingress annotations

[github-actions]

Hi @shaun-nx thanks for reporting!

Be sure to check out the docs and the Contributing Guidelines while you wait for a human to take a look at this 🙂

Cheers!