chore(gonf): added makefile

GNUmakefile

@@ -0,0 +1,51 @@
+SHELL := bash
+.SHELLFLAGS := -eu -o pipefail -c
+.ONESHELL:
+.DELETE_ON_ERROR:
+MAKEFLAGS += --warn-undefined-variables
+MAKEFLAGS += --no-builtin-rules
+.DEFAULT_GOAL := help
+
+##### Utils ####################################################################
+.PHONY: confirm
+confirm:
+	@echo -n 'Are you sure? [y/N] ' && read ans && [ $${ans:-N} = y ]
+
+.PHONY: help
+help:
+	@grep -E '^[a-zA-Z\/_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}' | sort
+
+.PHONY: no-dirty
+no-dirty:
+	git diff --exit-code
+
+##### Quality ##################################################################
+.PHONY: check
+check: ## run all code checks
+	go mod verify
+	go vet ./...
+	go test -race -buildvcs -vet=off ./...
+
+.PHONY: tidy
+tidy: ## tidy up the code
+	go fmt ./...
+	go mod tidy -v
+
+##### Development ##############################################################
+.PHONY: build
+build: ## build gonf
+	CGO_ENABLED=0 go build -ldflags "-s -w -extldflags \"-static\"" ./cmd/gonf/
+
+.PHONY: test
+test: ## run all tests
+	go test -v -race -buildvcs ./...
+
+.PHONY: test/cover
+test/cover: ## Run all tests and generate coverage profile
+	go test -v -race -buildvcs -coverprofile=./coverage.out ./...
+	go tool cover -html=./coverage.out
+
+##### Operations ###############################################################
+.PHONY: push
+push: tidy no-dirty check ## push changes to git remote
+	git push git master