add conformance report for AGC (#3939)

Author: snehachhabria

conformance/reports/v1.2.1/azure-application-gateway-for-containers/README.md

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+# Azure Application Gateway for Containers
+
+[Application Gateway for Containers][azure-application-gateway-for-containers] is a managed application (layer 7) load balancing solution, providing dynamic traffic management capabilities for workloads running in a Kubernetes cluster in Azure. Follow the [quickstart guide][azure-application-gateway-for-containers-quickstart-controller] to deploy the ALB controller and get started with Gateway API.
+
+## Table of Contents
+
+|API channel|Implementation version|Mode|Report|
+|-----------|----------------------|----|------|
+|standard|[v1.2.1](https://learn.microsoft.com/azure/application-gateway/for-containers/alb-controller-release-notes#latest-release-recommended)|default|[v1.2.1 report](./standard-v1.2.1-default-report.yaml)|
+
+
+[azure-application-gateway-for-containers]:https://aka.ms/appgwcontainers/docs
+[azure-application-gateway-for-containers-quickstart-controller]:https://aka.ms/appgwcontainers/docs

conformance/reports/v1.2.1/azure-application-gateway-for-containers/standard-v1.2.1-default-report.yaml

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+apiVersion: gateway.networking.k8s.io/v1
+date: "2025-07-18T23:02:29Z"
+gatewayAPIChannel: standard
+gatewayAPIVersion: v1.2.1
+implementation:
+  organization: Microsoft Azure
+  project: Application Gateway for Containers
+  url: https://aka.ms/appgwcontainers/docs
+  version: "1.7.9"
+  contact:
+  - [email protected]
+kind: ConformanceReport
+mode: default
+profiles:
+- core:
+    result: success
+    statistics:
+      Failed: 0
+      Passed: 12
+      Skipped: 0
+  name: GATEWAY-GRPC
+  summary: Core tests succeeded.
+- core:
+    result: success
+    statistics:
+      Failed: 0
+      Passed: 33
+      Skipped: 0
+  extended:
+    result: success
+    statistics:
+      Failed: 0
+      Passed: 9
+      Skipped: 0
+    supportedFeatures:
+    - HTTPRouteDestinationPortMatching
+    - HTTPRouteHostRewrite
+    - HTTPRouteMethodMatching
+    - HTTPRoutePathRedirect
+    - HTTPRoutePathRewrite
+    - HTTPRoutePortRedirect
+    - HTTPRouteQueryParamMatching
+    - HTTPRouteResponseHeaderModification
+    - HTTPRouteSchemeRedirect
+    unsupportedFeatures:
+    - GatewayHTTPListenerIsolation
+    - GatewayInfrastructurePropagation
+    - GatewayPort8080
+    - GatewayStaticAddresses
+    - HTTPRouteBackendProtocolH2C
+    - HTTPRouteBackendProtocolWebSocket
+    - HTTPRouteBackendRequestHeaderModification
+    - HTTPRouteBackendTimeout
+    - HTTPRouteParentRefPort
+    - HTTPRouteRequestMirror
+    - HTTPRouteRequestMultipleMirrors
+    - HTTPRouteRequestTimeout
+  name: GATEWAY-HTTP
+  summary: Core tests succeeded. Extended tests succeeded.