ShellPkg: add API for determining operation type

There are no callers for this new API yet.  They will be added in the next commits.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14975 6f19259b-4bc3-4df7-8a09-765794883524

ShellPkg/Application/Shell/Shell.h

@@ -124,6 +124,14 @@ typedef struct {
 
 extern SHELL_INFO ShellInfoObject;
 
+typedef enum {
+  INTERNAL_COMMAND,
+  SCRIPT_FILE_NAME,
+  EFI_APPLICATION,
+  FILE_SYS_CHANGE,
+  UNKNOWN_INVALID
+} SHELL_OPERATION_TYPES;
+
 /**
   Sets all the alias' that were registered with the ShellCommandLib library.