Automatic breadcrumbs for engine events

[limbonaut]

Instrument the Godot SDK to automatically add breadcrumbs for notable Godot Engine events or signals. For example, when a new scene is loaded we could add "Scene Loaded: res://scenes/epic_adventure.tscn" breadcrumb. This feature should aim to enrich events with meaningful context, not spam.

Consider also adding a similar log entry.

[linear]

GODOT-146