feat: 添加打包脚本并优化指引窗口管理

添加 build_and_package.sh 脚本用于自动化构建和打包
在 MenuContent 中增加对指引窗口的引用管理，避免重复创建
更新 .gitignore 忽略构建产物
添加 ExportOptions.plist 文件用于构建配置

ExportOptions.plist

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>method</key>
+    <string>development</string>
+    <key>signingStyle</key>
+    <string>automatic</string>
+    <key>stripSwiftSymbols</key>
+    <true/>
+    <key>teamID</key>
+    <string>W9MA4VFH3F</string>
+    <key>destination</key>
+    <string>export</string>
+    <key>compileBitcode</key>
+    <false/>
+    <key>thinning</key>
+    <string>&lt;none&gt;</string>
+</dict>
+</plist>