Add initial iOS project files for iso-test-app

- Created Info.plist with essential app configuration including bundle identifiers, versioning, and URL schemes.
- Added PrivacyInfo.xcprivacy to specify accessed API types and privacy tracking settings.
- Implemented SplashScreen.storyboard for the app's launch screen with a logo and background color.
- Established Expo.plist for update configurations, setting updates to check on launch.
- Created a bridging header for Swift compatibility.
- Added an empty entitlements file for future use.

ios/.xcode.env

@@ -0,0 +1,11 @@
+# This `.xcode.env` file is versioned and is used to source the environment
+# used when running script phases inside Xcode.
+# To customize your local environment, you can create an `.xcode.env.local`
+# file that is not versioned.
+
+# NODE_BINARY variable contains the PATH to the node executable.
+#
+# Customize the NODE_BINARY variable here.
+# For example, to use nvm with brew, add the following line
+# . "$(brew --prefix nvm)/nvm.sh" --no-use
+export NODE_BINARY=$(command -v node)