Add support for C# script extensions

- Allow defining function for use into the script
- Allow defining a ChatBot for loading it into MCC
- Improve sample script and add more examples
- Todo add new documentation into the readme file

MinecraftClient/config/sample-script-extended.cs

@@ -0,0 +1,30 @@
+//MCCScript 1.0
+
+/* This script demonstrates how to add fields and methods */
+
+for (int i = 0; i < 5; i++)
+{
+    int count = GetVarAsInt("test") + 1;
+    SetVar("test", count);
+    SendHelloWorld(count);
+    SleepBetweenSends();
+}
+
+//MCCScript Extensions
+
+/* Here you can define methods for use into your script */
+
+void SendHelloWorld(int count)
+{
+    /* Warning: Do not make more than one server-related call into a method
+     * defined as a script extension eg SendText or switching servers,
+     * as execution flow is not managed in the Extensions section */
+
+    SendText("Hello World no. " + count);
+}
+
+void SleepBetweenSends()
+{
+    LogToConsole("Sleeping for 5 seconds...");
+    Thread.Sleep(5000);
+}