Adds workflow_network.py implementing direct Redfish PATCH over the network
for cases where the IOM is already reachable (e.g. on DHCP) and needs
reconfiguration. Uses the same two-step PATCH workaround as the serial path:
pass 1 sets IPv4StaticAddresses, pass 2 disables DHCPv4. Option 1 in the
main menu now presents a Serial / Network / Back sub-menu before dispatching.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
