ShellPkg: Add pipe support for parse command

ShellPkg: Add pipe support for parse command

parse reads data from StdIn when pipe is used and does not require –sfo output stored in a file. (e.g.:  fs0:\> ls *.nsh –sfo | parse FileInfo 2)

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Tapan Shah <tapandshah@hp.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17555 6f19259b-4bc3-4df7-8a09-765794883524