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/build-config.yaml

@@ -0,0 +1,55 @@
+# Build Configuration for Lightweight Updater
+
+project:
+  name: "Lightweight Updater"
+  module: "lightweight-updater"
+  description: "轻量级自动更新器"
+
+version:
+  default: "1.0.0"
+  build_time_format: "2006-01-02T15:04:05Z"
+
+targets:
+  - name: "windows-amd64"
+    goos: "windows"
+    goarch: "amd64"
+    cgo_enabled: true
+    output: "lightweight-updater.exe"
+    
+build:
+  flags:
+    ldflags: "-s -w"
+    tags: []
+    
+  optimization:
+    strip_debug: true
+    strip_symbols: true
+    upx_compression: false  # Optional, requires UPX
+    
+  size_requirements:
+    max_size_mb: 10
+    warn_size_mb: 8
+
+assets:
+  embed:
+    - "assets/config_template.yaml"
+  
+directories:
+  build: "build"
+  dist: "dist"
+  temp: "temp"
+
+version_injection:
+  package: "lightweight-updater/version"
+  variables:
+    - name: "Version"
+      source: "version"
+    - name: "BuildTime" 
+      source: "build_time"
+    - name: "GitCommit"
+      source: "git_commit"
+
+quality:
+  run_tests: true
+  run_lint: false  # Optional
+  format_code: true