MdePkg/S3PciSegmentLib: Add S3PciSegmentLib class and instance.
    
    The patch adds the new library class S3PciSegmentLib to carry out
    PCI configuration and enable the PCI operations to be replayed during
    an S3 resume. This library class maps directly on top of the
    PciSegmentLib class.
    
    Contributed-under: TianoCore Contribution Agreement 1.0
    Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
    Reviewed-by: Liming Gao <liming.gao@intel.com>