Users might want to directly configure xDS Resources in case Envoy Gateway's API doesn't support their use case.
They might want to add/merge/remove/replace xDS resources that are pushed by Envoy Gateway into Envoy Proxy.
Projects such as Istio provide APIs such as EnvoyFilter to fulfill these use cases.

Outlining work items

• Define and Design API feat: EnvoyPatchPolicy API #1410
• Implement API in the Xds Translator Implement JSON Patch in Xds Translator #1606
• Implement support in egctl for offline verification feat: egctl x translate support for EnvoyPatchPolicy #1682
• Add status to Policy to show runtime status feat: EnvoyPatchPolicy Status #1691
• E2E e2e & misc fixes for EnvoyPatchPolicy #1738
• Docs docs: Add user docs for EnvoyPatchPolicy #1733