topology: pre-process-object: Add support for processing Manifest object

topology: pre-process-object: Add support for processing Manifest object

The pre-processor converts the Topology2.0 objects into
the relevant sections by looking for attributes defined
in the template config for the section and reading the
attribute values from the object instance config.

The structure struct build_function_map contains the
mapping of the build function to use for each object
based on the type and name for the class that the object
belongs to. The manifest object is the simplest with
no attributes. So, the build function simply creates
a new Section called SectionManifest which will be
populated with the data section in the following patches.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>