MdeModulePkg LoadFileOnFv2: Add new LoadFileOnFv2 driver

MdeModulePkg LoadFileOnFv2: Add new LoadFileOnFv2 driver

This driver searches APPLICATION in FV and installs LoadFile protocol
for every found one. Then, BDS will add BootOption for LoadFile protocol.

It provides the generic way to expose boot option for the internal
application, such as Shell. With this driver, PlatformBds doesn?t need
to specially handle Shell application.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>