Refactor: Seperate executor cases to categories.

src/ControlFlow.cpp

@@ -0,0 +1,12 @@
+#include "ControlFlow.h"
+
+#include "ExecutorCases.h"
+
+#include <iostream>
+
+namespace executor_cases {
+  void Hlt(CPUContext& cc){
+    std::cout << "Program halted!" << std::endl;
+    cc.m_IsHalted = true;
+  }
+}