feat(notifications): initialize Firebase Messaging and Capacitor push on native

Add firebaseMessagingClient to ensure the Firebase app is created from VITE_FIREBASE_*,
wire PushNotifications (listeners, requestPermissions, register) before token work,
and call getMessaging/getToken/onMessage when firebase/messaging is supported. Hook
startup from main.capacitor and set PushNotifications presentationOptions in
capacitor.config. Depend on firebase and @capacitor/push-notifications.

ios/App/Podfile

@@ -18,6 +18,7 @@ def capacitor_pods
   pod 'CapacitorCamera', :path => '../../node_modules/@capacitor/camera'
   pod 'CapacitorClipboard', :path => '../../node_modules/@capacitor/clipboard'
   pod 'CapacitorFilesystem', :path => '../../node_modules/@capacitor/filesystem'
+  pod 'CapacitorPushNotifications', :path => '../../node_modules/@capacitor/push-notifications'
   pod 'CapacitorShare', :path => '../../node_modules/@capacitor/share'
   pod 'CapacitorStatusBar', :path => '../../node_modules/@capacitor/status-bar'
   pod 'CapawesomeCapacitorFilePicker', :path => '../../node_modules/@capawesome/capacitor-file-picker'

ios/App/Podfile.lock

@@ -17,6 +17,8 @@ PODS:
   - CapacitorMlkitBarcodeScanning (6.2.0):
     - Capacitor
     - GoogleMLKit/BarcodeScanning (= 5.0.0)
+  - CapacitorPushNotifications (6.0.5):
+    - Capacitor
   - CapacitorShare (6.0.3):
     - Capacitor
   - CapacitorStatusBar (6.0.2):
@@ -99,6 +101,7 @@ DEPENDENCIES:
   - "CapacitorCordova (from `../../node_modules/@capacitor/ios`)"
   - "CapacitorFilesystem (from `../../node_modules/@capacitor/filesystem`)"
   - "CapacitorMlkitBarcodeScanning (from `../../node_modules/@capacitor-mlkit/barcode-scanning`)"
+  - "CapacitorPushNotifications (from `../../node_modules/@capacitor/push-notifications`)"
   - "CapacitorShare (from `../../node_modules/@capacitor/share`)"
   - "CapacitorStatusBar (from `../../node_modules/@capacitor/status-bar`)"
   - "CapawesomeCapacitorFilePicker (from `../../node_modules/@capawesome/capacitor-file-picker`)"
@@ -138,6 +141,8 @@ EXTERNAL SOURCES:
     :path: "../../node_modules/@capacitor/filesystem"
   CapacitorMlkitBarcodeScanning:
     :path: "../../node_modules/@capacitor-mlkit/barcode-scanning"
+  CapacitorPushNotifications:
+    :path: "../../node_modules/@capacitor/push-notifications"
   CapacitorShare:
     :path: "../../node_modules/@capacitor/share"
   CapacitorStatusBar:
@@ -156,6 +161,7 @@ SPEC CHECKSUMS:
   CapacitorCordova: 8d93e14982f440181be7304aa9559ca631d77fff
   CapacitorFilesystem: 59270a63c60836248812671aa3b15df673fbaf74
   CapacitorMlkitBarcodeScanning: 7652be9c7922f39203a361de735d340ae37e134e
+  CapacitorPushNotifications: 35abece14371c57172e8321c9ccc8b6fa35fabfe
   CapacitorShare: d2a742baec21c8f3b92b361a2fbd2401cdd8288e
   CapacitorStatusBar: b16799a26320ffa52f6c8b01737d5a95bbb8f3eb
   CapawesomeCapacitorFilePicker: c40822f0a39f86855321943c7829d52bca7f01bd
@@ -175,6 +181,6 @@ SPEC CHECKSUMS:
   TimesafariDailyNotificationPlugin: 95e0a6238f6586ca5190cc6d653ac882fb0e82ac
   ZIPFoundation: dfd3d681c4053ff7e2f7350bc4e53b5dba3f5351
 
-PODFILE CHECKSUM: bf247ff01f83709ef1010f328f5fb4ab5370cb41
+PODFILE CHECKSUM: efd66cc2a3ebb7b5bae6a7c15e52bda1ab546cf6
 
 COCOAPODS: 1.16.2