Update iOS SDK to 10.22.0 version

• Firebase iOS SDK updated to version 10.22.0

Remove FIR cpp SDK

• Firebase CPP SDK was removed from the extension, and now the extension uses iOS and Android SDKs directly.
• BREAKING CHANGES in API:
  • Now firebase.analytics uses one callback for all the async event that can be added with firebase.remoteconfig.set_callback()
  • firebase.analytics.init() replaced with firebase.analytics.initialize()
  • see an example in the Firebase manual https://defold.com/extension-firebase-analytics/

Special thanks to @Sippul79 for doing most of the work.

Upgraded build.gradle for compatibility with Gradle 7.x

FIX: The build.gradle is now compatible with Gradle 7.x and above
CHANGE: The extension uses cocoapods for ios

Control JVM thread on the extension side.

Firebase itself attach thread and doesn't care about detaching. It is a reason of accumulation a huge amount of local references which never cleanup.
On Android 7.0 and lower it's the reason of crashes.

Upgraded to Firebase C++ SDK 8.10.0 and iOS SDK 8.13.0

CHANGE: Upgraded to Firebase C++ SDK 8.10.0 and iOS SDK 8.13.0
CHANGE: analytics.set_screen() is deprecated in Firebase. Use analytics.log_string(analytics.EVENT_SCREENVIEW, "screen name", "screen class") instead.

Updated API reference

FIX: API documentation for init() and get_id() was not correct.

Added predefined event and parameter constants

NEW: Added all of the predefined event and parameter constants. Example: analytics.EVENT_POSTSCORE and analytics.PARAM_SCORE.

Make sure Analytics is initialized before use

FIX: Check that firebase.analytics.init() has been called before any other function is used

Fixed iOS build error

FIX: Added correct iOS frameworks
FIX: Changed the function name of the iOS implementation for logging an event to match firebase_analytics.h

Moved Firebase core into a separate extension

You will now also need to add a dependency to extension-firebase with a version matching the version used by Firebase Analytics