Added support for destructors! This is done by making a void, parameterless member method called destruct which is called when a stack object falls out of scope, if it exists. This is implemented by the generator, in this case CGenerator.

tests/emptyBracesFunction.krak

@@ -0,0 +1,9 @@
+import io;
+
+void nothing() {}
+
+int main() {
+    nothing();
+    println("It was nothing");
+    return 0;
+}