Created S# .sln and moved project to src folder

ICD.Common/Utils/Extensions/DateTimeExtensions.cs

@@ -0,0 +1,24 @@
+using System;
+
+namespace ICD.Common.Utils.Extensions
+{
+	/// <summary>
+	/// Extension methods for DateTime.
+	/// </summary>
+	public static class DateTimeExtensions
+	{
+		/// <summary>
+		/// Gets a string representation of the DateTime with millisecond precision.
+		/// </summary>
+		/// <param name="extends"></param>
+		/// <returns></returns>
+		public static string ToLongTimeStringWithMilliseconds(this DateTime extends)
+		{
+			if (extends == null)
+				throw new ArgumentNullException("extends");
+
+			// Todo - Better handle different cultures
+			return extends.ToString("HH:mm:ss:fff");
+		}
+	}
+}