feat: add expo replaceAndroidBackupConfig

[StanislavMayorov]

Add Expo config plugin with replaceAndroidBackupConfig option

Implements Expo config plugin to resolve Android Auto Backup conflicts between:

• Native Adapty Android SDK
• expo-secure-store
• appsflyer-react-native-plugin

Changes

• Added app.plugin.js and plugin/withAdapty.js
• Created backup rules XML files (rn_adapty_backup_rules.xml, rn_adapty_data_extraction_rules.xml)
• Backup rules exclude sensitive data from: Adapty, expo-secure-store, and AppsFlyer
• Uses tools:replace to override native SDK manifest attributes

Usage

{
  "plugins": [
    ["react-native-adapty", { "replaceAndroidBackupConfig": true }]
  ]
}

Default behavior

replaceAndroidBackupConfig is false by default (no modifications to manifest).

Problem

Resolves manifest merger conflicts like:

Attribute application@fullBackupContent value=(@xml/rn_adapty_backup_rules) from AndroidManifest.xml
is also present at [io.adapty:android-sdk:X.X.X] AndroidManifest.xml value=(@xml/adapty_backup_rules)

Resolved Issues

• Adapty is causing issues with latest MMKV (v4) #209
• Conflict with expo-secure-store #143
• Build error #133
• Backup Rules Conflict with AppsFlyer SDK Causing Android Build Failure [Expo Managed Workflow] #126