feat: Add Firebase configuration for staging and development environments

- Created google-services.json for staging environment.
- Updated firebase.json to include build configurations for dev and staging.
- Added flutterfire-config.sh script to generate Firebase configuration files.
- Modified Xcode project to include GoogleService-Info.plist for staging.
- Created staging.xcscheme for Xcode build configuration.
- Added GoogleService-Info.plist for dev and staging flavors.
- Generated firebase_options_dev.dart and firebase_options_staging.dart for Firebase initialization.

mobile-apps/client-app/ios/flavors/dev/GoogleService-Info.plist

@@ -0,0 +1,34 @@
+<?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>CLIENT_ID</key>
+	<string>933560802882-ml2526jqnnsteent4i9li50c00hisoge.apps.googleusercontent.com</string>
+	<key>REVERSED_CLIENT_ID</key>
+	<string>com.googleusercontent.apps.933560802882-ml2526jqnnsteent4i9li50c00hisoge</string>
+	<key>API_KEY</key>
+	<string>AIzaSyDyEXkzZAWpXXe4dAesYaZflt5BEtMn9tA</string>
+	<key>GCM_SENDER_ID</key>
+	<string>933560802882</string>
+	<key>PLIST_VERSION</key>
+	<string>1</string>
+	<key>BUNDLE_ID</key>
+	<string>com.krow.app.business.dev</string>
+	<key>PROJECT_ID</key>
+	<string>krow-workforce-dev</string>
+	<key>STORAGE_BUCKET</key>
+	<string>krow-workforce-dev.firebasestorage.app</string>
+	<key>IS_ADS_ENABLED</key>
+	<false></false>
+	<key>IS_ANALYTICS_ENABLED</key>
+	<false></false>
+	<key>IS_APPINVITE_ENABLED</key>
+	<true></true>
+	<key>IS_GCM_ENABLED</key>
+	<true></true>
+	<key>IS_SIGNIN_ENABLED</key>
+	<true></true>
+	<key>GOOGLE_APP_ID</key>
+	<string>1:933560802882:ios:7f0632ecbeff8f027757db</string>
+</dict>
+</plist>