add privacy manifest to pod install

Summary:
Changelog: [iOS][Added]

this creates the RN privacy manifest in the ios build step if user has not created one yet. the reasons have been added for the following APIs:

NSPrivacyAccessedAPICategoryFileTimestamp
- C617.1:
We access the filesize in order to handle loading JavaScript.
[RCTJavaScriptLoader](https://github.com/facebook/react-native/blob/3b2c4a18348892acf14120bc42fa1f54c261e914/packages/react-native/React/Base/RCTJavaScriptLoader.mm#L190), [JSBigString](https://github.com/facebook/react-native/blob/3b2c4a18348892acf14120bc42fa1f54c261e914/packages/react-native/ReactCommon/cxxreact/JSBigString.cpp#L102), [jsilib-posix](https://github.com/facebook/react-native/blob/3b2c4a18348892acf14120bc42fa1f54c261e914/packages/react-native/ReactCommon/jsi/jsi/jsilib-posix.cpp#L62)

NSPrivacyAccessedAPICategoryUserDefaults
- CA56D.1:
- We have one native module that is a wrapper of NSUserDefaults to give access in JavaScript product code. [RCTSettingsManager](https://github.com/facebook/react-native/blob/3b2c4a18348892acf14120bc42fa1f54c261e914/packages/react-native/Libraries/Settings/RCTSettingsManager.mm#L8)
- We have a utility file that let's users support RTL in their app. [RCTi18nUtil](https://github.com/facebook/react-native/blob/3b2c4a18348892acf14120bc42fa1f54c261e914/packages/react-native/React/Modules/RCTI18nUtil.m#L8)
- CA92.1: 
Within our framework, we use NSUserDefaults for a few things:
1) To store developer preferences. [RCTDevSettings](https://github.com/facebook/react-native/blob/3b2c4a18348892acf14120bc42fa1f54c261e914/packages/react-native/React/CoreModules/RCTDevSettings.mm#L8)
2) To store information about the JavaScript product code bundle. [RCTBundleURLProvider](https://github.com/facebook/react-native/blob/3b2c4a18348892acf14120bc42fa1f54c261e914/packages/react-native/React/Base/RCTBundleURLProvider.mm#L125)

Reviewed By: cipolleschi

Differential Revision: D53687232

packages/react-native/scripts/cocoapods/utils.rb

@@ -556,6 +556,37 @@ def self.set_imagemanager_search_path(target_installation_result)
         ReactNativePodsUtils.update_header_paths_if_depends_on(target_installation_result, "React-ImageManager", header_search_paths)
     end
 
+    def self.get_privacy_manifest_paths_from(user_project)
+        privacy_manifests = user_project
+            .files
+            .select { |p|
+                p.name&.end_with?('PrivacyInfo.xcprivacy')
+            }
+        return privacy_manifests
+    end
+
+    def self.add_privacy_manifest_if_needed(installer)
+        user_project = installer.aggregate_targets
+                    .map{ |t| t.user_project }
+                    .first
+        privacy_manifest = self.get_privacy_manifest_paths_from(user_project).first
+        if privacy_manifest.nil?
+            file_timestamp_reason = {
+                "NSPrivacyAccessedAPIType" => "NSPrivacyAccessedAPICategoryFileTimestamp",
+                "NSPrivacyAccessedAPITypeReasons" => ["C617.1"],
+            }
+            user_defaults_reason = {
+                "NSPrivacyAccessedAPIType" => "NSPrivacyAccessedAPICategoryUserDefaults",
+                "NSPrivacyAccessedAPITypeReasons" => ["CA56D.1", "CA92.1"],
+            }
+            privacy_manifest = {
+                "NSPrivacyAccessedAPITypes" => [file_timestamp_reason, user_defaults_reason]
+            }
+            path = File.join(user_project.path.parent, "PrivacyInfo.xcprivacy")
+            Xcodeproj::Plist.write_to_path(privacy_manifest, path)
+        end
+    end
+
     def self.react_native_pods
         return [
             "DoubleConversion",

packages/react-native/scripts/react_native_pods.rb

@@ -286,10 +286,11 @@ def react_native_post_install(
   ReactNativePodsUtils.set_use_hermes_build_setting(installer, hermes_enabled)
   ReactNativePodsUtils.set_node_modules_user_settings(installer, react_native_path)
   ReactNativePodsUtils.set_ccache_compiler_and_linker_build_settings(installer, react_native_path, ccache_enabled)
-  ReactNativePodsUtils.apply_xcode_15_patch(installer) 
+  ReactNativePodsUtils.apply_xcode_15_patch(installer)
   ReactNativePodsUtils.updateOSDeploymentTarget(installer)
   ReactNativePodsUtils.set_dynamic_frameworks_flags(installer)
   ReactNativePodsUtils.add_ndebug_flag_to_pods_in_release(installer)
+  ReactNativePodsUtils.add_privacy_manifest_if_needed(installer)
 
   NewArchitectureHelper.set_clang_cxx_language_standard_if_needed(installer)
   NewArchitectureHelper.modify_flags_for_new_architecture(installer, NewArchitectureHelper.new_arch_enabled)

packages/rn-tester/PrivacyInfo.xcprivacy

@@ -0,0 +1,26 @@
+<?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>NSPrivacyAccessedAPITypes</key>
+	<array>
+		<dict>
+			<key>NSPrivacyAccessedAPIType</key>
+			<string>NSPrivacyAccessedAPICategoryFileTimestamp</string>
+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>C617.1</string>
+			</array>
+		</dict>
+		<dict>
+			<key>NSPrivacyAccessedAPIType</key>
+			<string>NSPrivacyAccessedAPICategoryUserDefaults</string>
+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>CA56D.1</string>
+				<string>CA92.1</string>
+			</array>
+		</dict>
+	</array>
+</dict>
+</plist>