添加ios平台Info.plist文件，补充访问相册和位置信息的隐私描述

Info.plist

+<?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>NSPhotoLibraryUsageDescription</key>
+    <string>uni API 功能演示需读取相册</string>
+    <key>NSPhotoLibraryAddUsageDescription</key>
+    <string>uni API 功能演示需读写相册</string>
+    <key>NSLocationWhenInUseUsageDescription</key>
+    <string>uni API 功能演示需访问位置信息</string>
+    <key>NSLocationAlwaysUsageDescription</key>
+    <string>uni API 功能演示需在后台期间访问位置信息</string>
+    <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
+    <string>uni API 功能演示需访问位置信息</string>
+  </dict>
+</plist>