添加一个makefile，该makefile用来构建我的脚手架

用来构建 https://github.com/AgoCan/code-generator

# Makefile

# 变量定义
BINARY_NAME=myapp
GO=go
GOFLAGS=

# 默认构建目标
all: windows x86 darwin aarch64

# Windows x86 构建
windows:
	@echo "Building for Windows x86..."
	GOOS=windows GOARCH=amd64 $(GO) build $(GOFLAGS) -o $(BINARY_NAME)_windows_x86.exe

# Linux x86 构建
linux:
	@echo "Building for Linux x86..."
	GOOS=linux GOARCH=amd64 $(GO) build $(GOFLAGS) -o $(BINARY_NAME)_linux_x86

# Darwin x86 构建
darwin:
	@echo "Building for Darwin x86..."
	GOOS=darwin GOARCH=amd64 $(GO) build $(GOFLAGS) -o $(BINARY_NAME)_darwin_x86

# Windows AARCH64 构建
windows_aarch64:
	@echo "Building for Windows AARCH64..."
	GOOS=windows GOARCH=arm64 $(GO) build $(GOFLAGS) -o $(BINARY_NAME)_windows_arm64.exe

# Linux AARCH64 构建
linux_aarch64:
	@echo "Building for Linux AARCH64..."
	GOOS=linux GOARCH=arm64 $(GO) build $(GOFLAGS) -o $(BINARY_NAME)_linux_arm64

# Darwin AARCH64 构建
darwin_aarch64:
	@echo "Building for Darwin AARCH64..."
	GOOS=darwin GOARCH=arm64 $(GO) build $(GOFLAGS) -o $(BINARY_NAME)_darwin_arm64

# X86 构建，构建所有平台的 x86 版本
x86: windows linux darwin

# AARCH64 构建，构建所有平台的 aarch64 版本
aarch64: windows_aarch64 linux_aarch64 darwin_aarch64

# 清理构建文件
clean:
	@echo "Cleaning up..."
	rm -f $(BINARY_NAME)_windows_x86.exe $(BINARY_NAME)_linux_x86 $(BINARY_NAME)_darwin_x86
	rm -f $(BINARY_NAME)_windows_arm64.exe $(BINARY_NAME)_linux_arm64 $(BINARY_NAME)_darwin_arm64

.PHONY: all windows linux darwin x86 clean windows_aarch64 linux_aarch64 darwin_aarch64 aarch64