PcAtChipsetPkg: Add YAML files for CI builds
    
    https://bugzilla.tianocore.org/show_bug.cgi?id=2315
    
    Add YAML file to the package directory with the
    configuration of the checks to perform during a
    CI build.
    
    Cc: Ray Ni <ray.ni@intel.com>
    Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
    Acked-by: Ray Ni <ray.ni@intel.com>
    Reviewed-by: Liming Gao <liming.gao@intel.com>