Boilerplate verification to ensure LICENSE information is present (kubernetes-sigs#880)

* Copy boilerplate.py from gateway-api

* Create boilerplate.generatego.txt

* Create boilerplate.go.txt

* Create boilerplate.py.txt

* Create boilerplate.sh.txt

* Create verify-boilerplate.sh

* Create verify-all.sh

* Create kube-env.sh

* Update Makefile to run static analysis that calls verify-all.sh which in turn calls verify-boilerplate.sh

* trim unrequired dirs and files from skipped list in boilerplate.py

* Fix definition of verify-all.sh in the Makefile

* Adding execute permissions for the verify-all and verify-boilerplate scripts

* Adding execute permissions for boilerplate.py

* Fixing all existing violations that boilerplate verification found initially

* Adding some files to ignore list because modifying their licenses causes some diff errors to show up when compared to .orig files

* Update boilerplate verification scripts license year to 2025

* Remove year from boilerplate template for update-codegen.sh

* Add bin/kube_codegen.sh to skipped files for boilerplate verification

* Switch go codegen to use boilerplate.generatego.txt and remove the old redundant source

Author: bharathbrat

Makefile

@@ -92,7 +92,7 @@ manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and Cust
 
 .PHONY: generate
 generate: controller-gen code-generator manifests ## Generate code containing DeepCopy, DeepCopyInto, and DeepCopyObject method implementations.
-	$(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./..."
+	$(CONTROLLER_GEN) object:headerFile="hack/boilerplate/boilerplate.generatego.txt" paths="./..."
 	./hack/update-codegen.sh
 
 # Use same code-generator version as k8s.io/api
@@ -151,9 +151,14 @@ ci-lint: golangci-lint
 	$(GOLANGCI_LINT) run --timeout 15m0s
 
 .PHONY: verify
-verify: vet fmt-verify manifests generate ci-lint
+verify: vet fmt-verify manifests generate ci-lint verify-all
 	git --no-pager diff --exit-code config api client-go
 
+# Run static analysis.
+.PHONY: verify-all
+verify:
+	hack/verify-all.sh -v
+
 ##@ Build
 
 # Build the container image
@@ -300,7 +305,6 @@ install: manifests kustomize ## Install CRDs into the K8s cluster specified in ~
 uninstall: manifests kustomize ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config. Call with ignore-not-found=true to ignore resource not found errors during deletion.
 	$(KUSTOMIZE) build config/crd | $(KUBECTL) delete --ignore-not-found=$(ignore-not-found) -f -
 
-
 ##@ Helm
 PHONY: inferencepool-helm-chart-push
 inferencepool-helm-chart-push: yq helm