Implemented VirtualPrinterDriver project

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

@@ -0,0 +1,16 @@
+using JetBrains.Annotations;
+
+namespace VirtualPrinter.Agent.Core
+{
+    public interface IShell
+    {
+        void WriteIniEntry(string section, string key, string value, string iniFilePath);
+
+        [NotNull]
+        T ReadIniEntry<T>(string section, string key, string iniFilePath);
+
+        void Execute(IJobInfo job, ISessionInfo session, string exe, string args);
+
+        bool FileExists([NotNull]string path);
+    }
+}