build: add Makefile

Makefile

@@ -0,0 +1,29 @@
+# Makefile
+.DEFAULT_GOAL := help
+
+# Colors
+RED     := $(shell tput -Txterm setaf 1)
+GREEN   := $(shell tput -Txterm setaf 2)
+BLUE    := $(shell tput -Txterm setaf 4)
+CYAN    := $(shell tput -Txterm setaf 6)
+RESET   := $(shell tput -Txterm sgr0)
+
+## Commands
+
+test: ## Run the pkg tests
+	@go test -v ./pkg/...
+
+## Help
+
+# https://gist.github.com/thomaspoignant/5b72d579bd5f311904d973652180c705
+help: ## Show this help
+	@echo
+	@echo 'Usage:'
+	@echo '  ${CYAN}make${RESET} ${GREEN}<target>${RESET}'
+	@echo
+	@echo 'Targets:'
+	@awk 'BEGIN {FS = ":.*?## "} { \
+		if (/[a-zA-Z_\-]+:.*?##.*$$/) {printf "    ${CYAN}%-25s${GREEN}%s${RESET}\n", $$1, $$2} \
+		else if (/^## .*$$/) {printf "  ${BLUE}%s${RESET}\n", substr($$1,4)} \
+		}' $(MAKEFILE_LIST)
+	@echo