优化气体传感器数据解析和消息传递

- 使用union解析CO2/H2O数据，解决大小端问题
- 添加LINECOMMEND/LINEDATASHOW消息类型区分
- 添加WorkingState/SavingDate原子变量
- 修正气体传感器部分逻辑

Source/IrisSensor_Gas_P0.h

@@ -13,7 +13,7 @@ private:
 
 	float m_fTPTemperature;
 	float m_fPP, m_fPB;
-	unsigned long m_ulCO2, m_ulH2O;
+	long m_ulCO2, m_ulH2O;
 
 	unsigned int uiSoftwareVersion, uiHardwareVersion;
 public:
@@ -25,7 +25,7 @@ private:
 public:
 	int Initialize(std::string ucPortNumber);
 	int GetVersion();
-	int GetMeasuredData(unsigned long &ulCO2, unsigned long &ulH2O,float &fTPTemperature,float &fPP, float &fPB);
+	int GetMeasuredData(double &ulCO2, double &ulH2O,float &fTPTemperature,float &fPP, float &fPB);
 	int ZeroCalibration_N2();
 	int ZeroCalibration_Air();
 	int SpanCalibration(char cChannel, unsigned int uiPPM);