Add basic Makefile, for building and testing

Makefile

@@ -0,0 +1,10 @@
+# Initialize version and gc flags
+GO_LDFLAGS := -X `go list ./version`.GitCommit=`git rev-parse --short HEAD 2>/dev/null`
+GO_GCFLAGS :=
+
+podman-machine: $(shell find . -type f -name '*.go')
+	go build -ldflags "$(GO_LDFLAGS)" $(GO_GCFLAGS) ./cmd/podman-machine
+
+.PHONY: test
+test:
+	go test ./...