cleanup: Remove expired cfengine ports:
2024-03-01 sysutils/cfengine-masterfiles320: No longer supported by upstream
2024-03-01 sysutils/cfengine320: No longer supported by upstream
sysutils/cfengine*: Add cfengine320 and cfengine-masterfiles320
cfengine 3.20 and cfengine-masterfiles 3.20 are the newest to be
released by the cfengine folks.