Route iOS notification settings intent into the app

Request push notification permissions with provideAppNotificationSettings
so iOS surfaces an in-app notification settings button on the system
Settings screen. Since passing an options object opts out of the default
alert/badge/sound permissions, set those explicitly to preserve behavior.

Handle the resulting openSettingsForNotification callback in a new
NotificationSettings sub-module in expo-bluesky-swiss-army, which registers
a NotificationDelegate with expo-notifications' NotificationCenterManager
and converts the callback into a bluesky://settings/notifications deep link
that the existing linking config routes to the notification settings screen.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017BwQMxeGwza3oUcWSBNiKq

modules/expo-bluesky-swiss-army/ios/ExpoBlueskySwissArmy.podspec

@@ -10,6 +10,7 @@ Pod::Spec.new do |s|
   s.static_framework = true
 
   s.dependency 'ExpoModulesCore'
+  s.dependency 'EXNotifications'
 
   # Swift/Objective-C compatibility
   s.pod_target_xcconfig = {