ShellPkg/DP: Add more check for input parameters

ShellPkg/DP: Add more check for input parameters

New added checkers includes:
1. Too many invalid parameters
2. Too few parameter
3. Invalid number parameter for -n and -t flag
4. Conflict parameter of -A and -R.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jaben Carsey <jaben.carsey@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>