chore: add makefile for golang project

Author: codejsha

go-algorithm/Makefile

@@ -0,0 +1,18 @@
+.PHONY: all
+all: fmt clean build test
+
+.PHONY: fmt
+fmt:
+	go fmt ./...
+
+.PHONY: clean
+clean:
+	go clean
+
+.PHONY: build
+build:
+	go build ./...
+
+.PHONY: test
+test:
+	go test -v ./...