ShellPkg: fix mv and cp command related issues

1.mv deletes file/directory when trying to move it to non-existing file system.
2.mv causes RSOD in system when trying to move same file at the same location.
3.Refactor mv and cp command with command name passed-in.
remove redundant move status error message when file failed to move across file system.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Tapan Shah <tapandshah@hp.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17129 6f19259b-4bc3-4df7-8a09-765794883524

ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.h

@@ -338,6 +338,7 @@ ShellCommandRunVol (
   @param[in] Dest       pointer to destination file name
   @param[out] Resp      pointer to response from question.  Pass back on looped calling
   @param[in] SilentMode whether to run in quiet mode or not
+  @param[in] CmdName    Source command name requesting single file copy
 
   @retval SHELL_SUCCESS   The source file was copied to the destination
 **/
@@ -347,7 +348,8 @@ CopySingleFile(
   IN CONST CHAR16 *Source,
   IN CONST CHAR16 *Dest,
   OUT VOID        **Resp,
-  IN BOOLEAN      SilentMode
+  IN BOOLEAN      SilentMode,
+  IN CONST CHAR16 *CmdName
   );
 
 /**