Add support for hypervisor network configuration

This commit is created based on the following change in
phosphor-networkd that creates an intermediate app
which takes care of hypervisor network configuration
from bmcweb and and updates the bios manager:
https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-networkd/+/43173



This service hosts the hypervisor network object that contains
ethernet and ip address objects which will have corresponding
attributes in the bios table.

The above gerrit commit will give further details on what this
application does.

Tested the same.

Signed-off-by: Asmitha Karunanithi <asmitk01@in.ibm.com>
Change-Id: I5a189b30efe931648a0d71da743ce607107dcfb3