Add custom annotations into GatewayClass and NginxGateway manifests #6018

Job	Run time
Checks and variables	1m 25s
Unit Tests	2m 20s
NJS Unit Tests	16s
Build Binary	1m 39s
Build Plus images / build	44s
Build OSS images (ngf, linux/arm64, linux/amd64) / build	1m 15s
Build OSS images (nginx, linux/arm64, linux/amd64) / build	47s
Functional tests (nginx, v1.25.16) / Run Tests	5m 28s
Functional tests (nginx, v1.30.0) / Run Tests	5m 49s
Functional tests (plus, v1.25.16) / Run Tests	5m 4s
Functional tests (plus, v1.30.0) / Run Tests	4m 33s
Helm Tests (nginx, v1.30.0) / Helm Tests Local	1m 50s
Helm Tests (nginx, v1.25.16) / Helm Tests Remote	0s
Helm Tests (nginx, v1.25.16) / Helm Tests Local	1m 45s
Helm Tests (plus, v1.25.16) / Helm Tests Local	56s
Helm Tests (nginx, v1.30.0) / Helm Tests Remote	0s
Helm Tests (plus, v1.30.0) / Helm Tests Remote	0s
Helm Tests (plus, v1.25.16) / Helm Tests Remote	0s
Conformance tests (nginx, v1.25.16, false) / Run Tests	7m 17s
Helm Tests (plus, v1.30.0) / Helm Tests Local	1m 48s
Conformance tests (nginx, v1.30.0, false) / Run Tests	7m 12s
Conformance tests (nginx, v1.25.16, true) / Run Tests	7m 8s
Conformance tests (nginx, v1.30.0, true) / Run Tests	7m 14s
Conformance tests (plus, v1.25.16, false) / Run Tests	7m 17s
Conformance tests (plus, v1.25.16, true) / Run Tests	6m 52s
Conformance tests (plus, v1.30.0, false) / Run Tests	6m 58s
Conformance tests (plus, v1.30.0, true) / Run Tests	6m 38s
Package and Publish Helm Chart	0s
	1h 32m 15s

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