Add iOS privacy manifests file

ios/Resources/PrivacyInfo.xcprivacy

+<?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>NSPrivacyTrackingDomains</key>
+    <array/>
+    <key>NSPrivacyAccessedAPITypes</key>
+    <array/>
+    <key>NSPrivacyCollectedDataTypes</key>
+    <array/>
+    <key>NSPrivacyTracking</key>
+    <false/>
+</dict>
+</plist>

ios/fluwx.podspec

@@ -87,6 +87,7 @@ The capability of implementing WeChat SDKs in Flutter. With Fluwx, developers ca
   s.dependency 'Flutter'
   s.platform = :ios, '11.0'
   s.static_framework = true
+  s.resource_bundles = {'fluwx_privacy' => ['Resources/PrivacyInfo.xcprivacy']}
   s.default_subspec = fluwx_subspec
 
   pod_target_xcconfig = {