Implemented VirtualPrinterDriver project

Common/VirtualPrinter.Agent.Core/Interfaces/IJobProcessor.cs

@@ -0,0 +1,18 @@
+using System;
+
+using JetBrains.Annotations;
+
+namespace VirtualPrinter.Agent.Core
+{
+    public interface IJobProcessor
+    {
+        /// <summary>
+        /// Processes an <see cref="IJob"/> passed to it with the information from the <see cref="IUserConfig"/>.
+        /// </summary>
+        /// <param name="job"></param>
+        /// <param name="userConfig"></param>
+        /// <exception cref="ArgumentNullException">Throws when the <param name="job">job</param> or the <param name="userConfig"> is null.</param></exception>
+        /// <exception cref="PostScriptConversionException">The job cannot be converted. There is no redirect to a printer. Will not be thrown.</exception>
+        void Process([NotNull]IJob job, [NotNull]IUserConfig userConfig);
+    }
+}