Chore: 添加一个 Makefile 文件，同时编译出四个平台的可执行文件

.gitignore

@@ -0,0 +1 @@
+go-mud*

Makefile

@@ -0,0 +1,24 @@
+default: all
+
+ALL=go-mud-linux-amd64 go-mud-linux-arm64 go-mud-macOS-amd64 go-mud-windows-amd64.exe
+all: $(ALL)
+
+SRCS=main.go
+
+go-mud-linux-amd64: $(SRC)
+	GOOS=linux GOARCH=amd64 go build -o $@ main.go
+
+go-mud-linux-arm64: $(SRC)
+	GOOS=linux GOARCH=arm64 go build -o $@ main.go
+
+go-mud-macOS-amd64: $(SRC)
+	GOOS=darwin GOARCH=amd64 go build -o $@ main.go
+
+go-mud-windows-amd64.exe: $(SRC)
+	GOOS=windows GOARCH=amd64 go build -o $@ main.go
+
+zip: all
+	zip go-mud.zip go-mud-{linux,macOS,windows}-* *.lua
+
+clean:
+	rm -f $(ALL)