Firebase-ios-sdk: FR: Make public API for StackFrame creation from address

[segrey-profi]

Feature proposal

• Firebase Component: Crashlytics

Fabric SDK has public function CLSStackFrame(address:) which is needed for correct crash logging of Kotlin Multiplatform frameworks (see https://github.com/touchlab/CrashKiOS)

Firebase Crashlytics contains FIRCLSSymbolResolver class with frameForAddress: method which seems to do the same job, but it is private API so we cannot even check if it works for Kotlin frameworks.

Please make the same public API as CLSStackFrame(address:) in Fabric SDK.

[Thomas-Vos]

See also: https://github.com/firebase/firebase-ios-sdk/issues/5182

[elenadoty]

We've added this API to a branch that should be going out in the next release.