ShellPkg: Add a simple case to test shell parameter parsing logic

ShellPkg: Add a simple case to test shell parameter parsing logic

TestArgv.nsh is a very simple shell script to test how the interpreter parses
the parameters. It uses ShellCTestApp.efi to dump the parameters passed from the
interpreter.

TestArgv.log is the desired output created using "TestArgv.nsh > TestArgv.log".

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18558 6f19259b-4bc3-4df7-8a09-765794883524