chore: add make release target

Makefile

@@ -117,6 +117,24 @@ image-push: ## Push container image
 .PHONY: image
 image: image-build image-push ## Build and push docker image with the manager.
 
+##@ Release
+define update-manifests
+	sed -i 's/newTag: .*/newTag: $(1)/' config/manager/kustomization.yaml
+endef
+
+.PHONY: release
+release: ## Create a new release
+	$(call header,"Releasing version $(VERSION)")
+	@$(call update-manifests,$(VERSION)); \
+	git add config/ && \
+	git commit -m "release: $(VERSION)" && \
+	git tag -a "$(VERSION)" -m "Release $(VERSION)"; \
+	$(call update-manifests,latest); \
+	git add config/ && \
+	git commit -m "release: next iteration"
+	@echo "Done, don't forget to push. When pushing, add --tags to your call."
+
+
 ##@ Deployment
 
 ifndef ignore-not-found