Add menu for privacy policy

V2rayNG/app/src/main/res/menu/menu_drawer.xml

@@ -32,6 +32,10 @@
             android:id="@+id/feedback"
             android:icon="@drawable/ic_feedback_24dp"
             android:title="@string/title_pref_feedback" />
+        <item
+                android:id="@+id/privacy_policy"
+            android:icon="@drawable/ic_info_24dp"
+            android:title="@string/title_privacy_policy" />
         <!-- place holder for version text at the bottom -->
         <item
             android:id="@+id/placeholder"

V2rayNG/app/src/main/res/values-zh-rCN/strings.xml

@@ -160,6 +160,7 @@
     <string name="summary_pref_feedback">反馈改进或漏洞至 GitHub</string>
     <string name="summary_pref_tg_group">加入Telegram Group</string>
     <string name="toast_tg_app_not_found">未找到Telegram app</string>
+    <string name="title_privacy_policy">隐私权政策</string>
 
     <string name="title_pref_promotion">推广</string>
     <string name="summary_pref_promotion">一些推广,点击查看详情(捐赠可去除)</string>

V2rayNG/app/src/main/res/values-zh-rTW/strings.xml

@@ -160,6 +160,7 @@
     <string name="summary_pref_feedback">前往 GitHub 回報錯誤</string>
     <string name="summary_pref_tg_group">加入 Telegram 群組</string>
     <string name="toast_tg_app_not_found">未找到 Telegram 應用程式</string>
+    <string name="title_privacy_policy">隱私權政策</string>
 
     <string name="title_pref_promotion">推廣</string>
     <string name="summary_pref_promotion">一些推廣，輕觸以檢視 (捐贈可去除)</string>

V2rayNG/app/src/main/res/values/strings.xml

@@ -168,6 +168,7 @@
     <string name="summary_pref_feedback">Feedback enhancements or bugs to GitHub</string>
     <string name="summary_pref_tg_group">Join Telegram Group</string>
     <string name="toast_tg_app_not_found">Telegram app not found</string>
+    <string name="title_privacy_policy">Privacy policy</string>
 
     <string name="title_pref_promotion">Promotion</string>
     <string name="summary_pref_promotion">Promotion,click for details(Donation can be removed)</string>