Add help target to Makefile

provider-service/stub/Makefile

@@ -1,6 +1,10 @@
 include ../../common.mk
 include ../../docker-targets.mk
 
+.PHONY: help
+help: ## Display this help.
+	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
+
 IMG := kfp-operator-stub-provider-service
 
 all: build
@@ -13,9 +17,6 @@ fmt: ## Run go fmt against code.
 vet: ## Run go vet against code.
 	go vet ./...
 
-unit-test:
-	go test ./... -tags=unit
-
 test: unit-test
 
 ##@ Build