Fix missing config for background fetch

ios/app/AppDelegate.mm

@@ -8,12 +8,17 @@
 // splash screen
 #import "RNSplashScreen.h"
 
+#import <TSBackgroundFetch/TSBackgroundFetch.h>
+
 @implementation AppDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
 {
   // Show the splash screen
   // [RNSplashScreen show]; 
+  
+  // Register BackgroundFetch
+  [[TSBackgroundFetch sharedInstance] didFinishLaunching];
 
   self.moduleName = @"xyz.blueskyweb.app";
   return [super application:application didFinishLaunchingWithOptions:launchOptions];

ios/app/Info.plist

@@ -2,6 +2,10 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>BGTaskSchedulerPermittedIdentifiers</key>
+	<array>
+		<string>com.transistorsoft.fetch</string>
+	</array>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>en</string>
 	<key>CFBundleDisplayName</key>
@@ -54,6 +58,10 @@
 	<string></string>
 	<key>NSPhotoLibraryUsageDescription</key>
 	<string>Used to upload pictures and videos when composing posts, choosing avatars, and so on.</string>
+	<key>UIBackgroundModes</key>
+	<array>
+		<string>fetch</string>
+	</array>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
 	<key>UIRequiredDeviceCapabilities</key>