ShellPkg: use UEFI_APPLICATION module type for Shell components

ShellPkg: use UEFI_APPLICATION module type for Shell components

Some of the libraries under ShellPkg/Library/ are only intended to be
loaded into the Shell by means of a NULL LibraryClass resolution, and
serve no other purpose. Since the Shell itself is a UEFI_APPLICATION, it
makes sense to set the module type of those libraries to UEFI_APPLICATION
as well.

This allows us to use different compiler flags for the Shell application
itself but also for the majority of its constituent parts that are built
separately via these libraries.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18310 6f19259b-4bc3-4df7-8a09-765794883524