Nested state now initialize correctly

[Cantonplas]

No description provided.

[Copilot]

Pull request overview

This PR updates the low-level state machine implementation to better support nested state machines by introducing lifecycle hooks (enter/exit/start) in the IStateMachine interface and invoking nested lifecycle transitions alongside parent state transitions.

Changes:

• Add enter(), exit(), and start() as protected pure-virtual lifecycle methods on IStateMachine, and friend StateMachine to allow invoking them via IStateMachine*.
• Invoke nested state machine enter()/exit() when the parent transitions between states.
• Add a start() method that enters the initial state and starts the nested machine for that state.

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[victor-Lopez25]

LGTM

[oganigl]

Lo veo bien