increment PC after every Instruction (#29)

Co-authored-by: darkress <30271678+DarkressX@users.noreply.github.com>
Reviewed-on: darkress/pic16f84-sim#29

de/darkress/pic16f84sim/commands/Incfsz.java

@@ -25,8 +25,7 @@ public class Incfsz extends FileRegisterCommandUtils implements Command
 
         if((result % 256) == 0)
         {
-            Nop nop = new Nop();
-            nop.execute(); // TODO: What happens if an interrupt gets triggered during the nop execution?
+            ProgramCounter.incPC();
         }
         ProgramCounter.incPC();
     }