Add makefile

Makefile

@@ -0,0 +1,76 @@
+-include .env
+
+VERSION := $(shell git describe --tags)
+BUILD := $(shell git rev-parse --short HEAD)
+PROJECTNAME := $(shell basename "$(PWD)")
+
+# Go related variables.
+GOBASE := $(shell pwd)
+GOPATH := $(GOBASE)/vendor:$(GOBASE)
+GOBIN := $(GOBASE)/out
+GOFILES := $(wildcard *.go)
+
+# Use linker flags to provide version/build settings
+LDFLAGS=-ldflags "-X=main.Version=$(VERSION) -X=main.Build=$(BUILD)"
+
+# Make is verbose in Linux. Make it silent.
+MAKEFLAGS += --silent
+
+## install: Install missing dependencies. Runs `go get` internally. e.g; make install get=github.com/foo/bar
+install: go-get
+
+## test: Run all tests
+test:
+	@-$(MAKE) -s go-test
+
+## compile: Compile the binary.
+compile:
+	@-$(MAKE) -s go-compile
+
+## exec: Run given command, wrapped with custom GOPATH. e.g; make exec run="go test ./..."
+exec:
+	@GOPATH=$(GOPATH) GOBIN=$(GOBIN) $(run)
+
+## clean: Clean build files. Runs `go clean` internally.
+clean:
+	@-rm $(GOBIN)/$(PROJECTNAME) 2> /dev/null
+	@-$(MAKE) go-clean
+
+go-compile: go-get go-build
+
+go-build:
+	@echo "  >  Building binary..."
+	@GOPATH=$(GOPATH) GOBIN=$(GOBIN) go build $(LDFLAGS) -o $(GOBIN)/$(PROJECTNAME) $(GOFILES)
+
+go-generate:
+	@echo "  >  Generating dependency files..."
+	@GOPATH=$(GOPATH) GOBIN=$(GOBIN) go generate $(generate)
+
+go-get:
+	@echo "  >  Checking if there is any missing dependencies..."
+	@GOPATH=$(GOPATH) GOBIN=$(GOBIN) go get $(get)
+
+go-install:
+	@GOPATH=$(GOPATH) GOBIN=$(GOBIN) go mod tidy
+
+go-vendor:
+	@GOPATH=$(GOPATH) GOBIN=$(GOBIN) go mod vendor
+
+go-test:
+	@GOPATH=$(GOPATH) GOBIN=$(GOBIN) go test -v ./...
+
+richgo-test:
+	@GOPATH=$(GOPATH) GOBIN=$(GOBIN) richgo test -v ./...
+
+go-clean:
+	@echo "  >  Cleaning build cache"
+	@GOPATH=$(GOPATH) GOBIN=$(GOBIN) go clean
+
+.PHONY: help
+all: help
+help: Makefile
+	@echo
+	@echo " Choose a command run in "$(PROJECTNAME)":"
+	@echo
+	@sed -n 's/^##//p' $< | column -t -s ':' |  sed -e 's/^/ /'
+	@echo