MdeModulePkg/EbcDxe: prepare support for EBC Debugger

* This patch introduces EbcDebuggerHook.c/h and inserts the required
  EBCDebugger references into the existing EBC source files.
* With all the hooks defined to their empty version in EbcDebuggerHook.c
  the existing EBC VM behaviour is left unaffected.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Pete Batard <pete@akeo.ie>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

MdeModulePkg/Universal/EbcDxe/AArch64/EbcSupport.c

@@ -18,6 +18,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #include "EbcInt.h"
 #include "EbcExecute.h"
+#include "EbcDebuggerHook.h"
 
 //
 // Amount of space that is not used in the stack
@@ -225,6 +226,7 @@ EbcInterpret (
   //
   // Begin executing the EBC code
   //
+  EbcDebuggerHookEbcInterpret (&VmContext);
   EbcExecute (&VmContext);
 
   //
@@ -336,6 +338,7 @@ ExecuteEbcImageEntryPoint (
   //
   // Begin executing the EBC code
   //
+  EbcDebuggerHookExecuteEbcImageEntryPoint (&VmContext);
   EbcExecute (&VmContext);
 
   //