Add method to MotorErrors.java to check if a CANSparkMax is currently overheated

[FriedLongJohns]

Unfortunately I don't think anyone wants to read this, so I left the method as multiple lines.

public static boolean isSparkMaxOveheated(CANSparkMax spark){return spark.getMotorTempurature > spark.TemperatureLimits.get(spark.getDeviceId());}