KabylakeOpenBoardPkg: Example of board S3

Use silicon code to detect S3 resume state. Apply some relevant policy
modifications.

PcdPeiMemSize must be in common scope, for a DXE module to allocate
required memory. Libraries that produce required PPIs are defined.

BootScriptExecutorDxe should only be linked against a functionally
compatible debug stack.

Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Ankit Sinha <ankit.sinha@intel.com>
Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Jeremy Soller <jeremy@system76.com>
Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
Cc: Isaac Oram <isaac.w.oram@intel.com>
Signed-off-by: Benjamin Doron <benjamin.doron00@gmail.com>
Reviewed-by: Isaac Oram <isaac.w.oram@intel.com>