DynamicTablesPkg: Configuration Manager Helper
    
    This patch defines a helper macro 'GET_OBJECT_LIST()' that
    expands to a function that uses the configuration manager
    protocol to retrieve configuration manager object(s).
    
    Contributed-under: TianoCore Contribution Agreement 1.1
    Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
    Reviewed-by: Alexei Fedorov <alexei.fedorov@arm.com>