Add support for string interpolation in structured logging API

Godot has [builtin string formatting](https://docs.godotengine.org/en/stable/tutorials/scripting/gdscript/gdscript_format_string.html) syntax. We should add support for it in our structured logging API (via `SentrySDK.logger`).

- Depends on  https://github.com/getsentry/sentry-native/issues/1405
