Base class for creating custom profilers. This class can be used to implement custom profilers that are able to interact with the engine and editor debugger. See [EngineDebugger] and [EditorDebuggerPlugin] for more information. Called when data is added to profiler using [method EngineDebugger.profiler_add_frame_data]. Called once every engine iteration when the profiler is active with information about the current frame. Called when the profiler is enabled/disabled, along with a set of [code]options[/code].