ShellPkg/AcpiView: Add application wrapper

ShellPkg/AcpiView: Add application wrapper

Simple application wrapper that invokes the shell
command wrapper for 'acpiview'.

This allows the AcpiView functionality to be used
on platforms with older specifications of the UEFI
shell or where the 'acpiview' command is not built in
due to platform build configuration.

Furthermore, this app can be integrated into more comprehensive
testing frameworks as a single component of a more thorough
specification compliance validation strategy.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Zhichao Gao <zhichao.gao@intel.com>
Reviewed-by: Zhichao Gao <zhichao.gao@intel.com>
Signed-off-by: Tomas Pilar <tomas.pilar@arm.com>