Implement Npcf_SMPolicyControl API client

New Features

• Add N7 class to handle PCF association and PCC rules
• Add new config parameters for PCF control

Added the following options:

• DISCOVER_PCF -> Enable PCF discovery with NRF (not supported yet)
• USE_LOCAL_PCC_RULES -> Enable/Disable Local PCC rules
• PCF configuration (IP, port, api version, fqdn), static and DNS based discovery

Currently not supported

• PCF NRF discovery (automatically set to false when set)
• Use the policy (see other edge computing related branches)

Trace

smf_uses_npcf-smpolicycontrol.pcapng