Method GetBlockNesting

src/GCodes/GCodeMachineState.h:227–227

	GCodeMachineState *Pop() const noexcept;
	uint16_t GetBlockNesting() const noexcept { return blockNesting; }

	void SetMacroRestartable(bool b) noexcept { macroRestartable = b; }
	bool CanRestartMacro() const noexcept;