feat: migration to SPM only and iOS SDK update to 11.0.0

[illuminati1911]

Summary

• Upgrade Google Navigation SDK for iOS to 11.0.0.
• Resolve Google Navigation through Swift Package Manager instead of CocoaPods. React Native 0.87+ is required.
• Update the iOS implementation for Navigation SDK 11 changes:
  • showTrafficLights and showStopSigns are now ignored on iOS and remain supported on Android.
  • Terrain map type is no longer supported during active navigation on iOS.
  • Add the required NSMotionUsageDescription.
• Update the example app, CI configuration, and migration/setup documentation for the new SPM-based integration.

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I signed the CLA.
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation
• I added new tests to check the change I am making
• All existing and new tests are passing.