feat(Go_Updater): 添加全新 Go 语言实现的自动更新器

- 新增多个源文件和目录，包括 app.rc、assets、build 脚本等
- 实现了与 MirrorChyan API 交互的客户端逻辑
- 添加了版本检查、更新检测和下载 URL 生成等功能
- 嵌入了配置模板和资源文件系统
- 提供了完整的构建和发布流程

Go_Updater/version/version.go

@@ -0,0 +1,41 @@
+package version
+
+import (
+	"fmt"
+	"runtime"
+)
+
+var (
+	// Version is the current version of the application
+	Version = "1.0.0"
+	
+	// BuildTime is set during build time
+	BuildTime = "unknown"
+	
+	// GitCommit is set during build time
+	GitCommit = "unknown"
+	
+	// GoVersion is the Go version used to build
+	GoVersion = runtime.Version()
+)
+
+// GetVersionInfo returns formatted version information
+func GetVersionInfo() string {
+	return fmt.Sprintf("Version: %s\nBuild Time: %s\nGit Commit: %s\nGo Version: %s",
+		Version, BuildTime, GitCommit, GoVersion)
+}
+
+// GetShortVersion returns just the version number
+func GetShortVersion() string {
+	return Version
+}
+
+// GetBuildInfo returns build-specific information
+func GetBuildInfo() map[string]string {
+	return map[string]string{
+		"version":    Version,
+		"build_time": BuildTime,
+		"git_commit": GitCommit,
+		"go_version": GoVersion,
+	}
+}