Add project files.

NmeaParser.cs

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+using GpsClient2.NmeaMessages;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace GpsClient2 {
+    public class NmeaParser {
+        /// <summary>
+        /// Parses a string to the NmeaMessage class.
+        /// </summary>
+        /// <param name="message">The nmea string that need to be parsed.</param>
+        /// <returns>Returns an NmeaMessage class. If it cannot parse it will return null.</returns>
+        public NmeaMessage Parse(string message) {
+            if (!message.StartsWith("$")) {
+                return null;
+            }
+
+            var messageParts = message.RemoveAfter("*").Split(',');
+            var classType = NmeaConstants.GetClassType(messageParts[0].TrimStart('$'));
+            var newInstance = (NmeaMessage)Activator.CreateInstance(classType);
+            newInstance.Parse(messageParts);
+            return newInstance;
+        }
+    }
+}